What are the top Judo nations?

Determining which nations are the strongest in Judo is a complicated calculation. In this article we shall approach this by looking at Rio2016 Olympic games.

Technology makes investigating this subject somewhat easier than in earlier times. The IJF operates the http://judobase.org website, which includes all data from IJF events since 2009, including the Olympic Games in Rio.

Medals

  • Japan
  • France
  • Russia
  • Italy
  • USA

Wins

  • Japan
  • Slovenia
  • Italy
  • Azerbaijan
  • France

From these two metrics we can easily identify that Japan tops both lists, France and Italy appear on both lists as well. USA does not appear on the second list, but only just they are 6th on that list.

These two metrics suggest that Japan and France are the strongest nations.

Other metrics need to be considered also, for example number of athletes qualified for the event (excluding the home nation Brazil that had automatic qualification):

  • France
  • Japan
  • Germany
  • Mongolia
  • Russia

Again, France and Japan top the list, which could infer depth of talent. France and Japan were the only two nations that had 14 athletes compete in Rio.

More investigation is required clearly, but even this simple examination can give some information and importantly raise questions around the topic.

 

Optimal competition scheduling.

In 2016 a paper was published by Emerson Franchini, Monica Y. Takito, Rodrigo M. da Silva, Seihati A. Shiroma, Ursula F. Julio and myself.

Optimal Interval for Success in Judo World Ranking Competitions” is an investigation into the number of days/weeks between competitions for Judo athletes competing on the IJF senior circuit.

The study concludes:

“Optimal interval period between successive competitions varies according to competition level and sex: shorter intervals (6-9 weeks) for females competing at the lowest competition level (Continental Open), for most of the competitions the 10-13 week interval was detected as optimal for both male and female athletes (Grand Prix, Continental Championship and World Championship), while for the ranking-based qualified male competitions (i.e., Masters and Olympic Games) a longer period (> 14 weeks) is needed.”

The paper suggests that female athletes are competing approximately once every 10-13 weeks.

In terms of athletes development and planning the finding that the optimal is different between male and female athletes is interesting and should be factored into athlete competition scheduling.

Equally, it is worth investigating if your less experienced athletes should be competing more frequently; with the time between competitions increasing as they progress up the ranks.

This does however assume that the increased time between competitions is related. We should research into the subject more fully to understand the area more thoroughly.

 

2016 Junior WRL Statistics

The IJF World Ranking Lists are valuable sources of metrics for researchers. This article includes some simple statistics gained from the 2016 IJF Junior WRL.

2016 IJF Junior Athletes

These charts can make it easy for interested people to visualise the dispersal of athletes across both weight classes and continental unions.

From this you can easily see that the W-57kg and M-73kg categories are the most popular and that majority of athletes are from the EJU. Comparing Male to Female you can see a difference in the overall shape of the charts. It would appear that the females have a more even distribution of athletes across females with male athletes being skewed towards the lighter weights.

As coaches, researchers or administrators these simple statistics might be useful for decision making processes. For example event organisers might identify the need to attract more heavyweight junior males to participate in events.

The IJF world ranking lists are freely available from the IJF.org website and this site would welcome contributed articles based on investigations into the Cadet, Junior and Senior IJF World Ranking Lists.

Judobase.org

The first big european event in the Rio2016 qualification period occured on the weekend and it is a good time to explore the data we now have freely available from the IJF.

This year The International Judo Federation (IJF) released the Judobase.org website. This site has been in development for sometime and now is available, for free, to anyone. The site is similar to the venerable judoinside.com site, with a couple of important differentiators.

1) It is created from the official IJF data systems.

What this means is that this is the “official” source of data, and coming direct from the IJF IT systems it should be more accurate.

It does however mean that it only covers the IJF events, so judoinside remains the go to site for a complete picture of athletes career. The JudoBase site will not tell you if/when a player won their national championships, etc.

2) Scores.

Judobase being intergrated into the IJF data systems is able to capture and include scoring data. So you can see when a score happens in each fight (only available in more recent events). So it has more detail.

3) Video.

Once again being integrated has it’s advantages, the video from the official cameras is being encoded and uploaded with only a small delay to Judobase.org. You can click on a contest and watch the video (whilst looking at the scores) and really get the data you need.

4. WRL Integration

The judobase system already includes the athletes world ranking list (WRL) data. This is currently coming from the manual systems but will I imagine become the canonical source for ranking data.

So what can we discover?

The statistical side of Judobase.org is not very mature, it is really only an indication of what is possible. I would hope that the readers of this blog would quickly find ideas and share them so that the Judobase system can automatically generate relevant data for enthusiasts, fans and researchers.

 

So the latest event at the time of writing is the Budapest Grand Prix; and this is available at http://judobase.org/#/competition/profile/1166

 

A new Olympic qualification cycle begins, Rio2016

On May 31st 2014, the qualification period for the Rio2016 Judo tournament began. This is the start for the nations and athletes of the final build-up to the pinnacle event in Judo, the Olympic Games. judobase_bannerAnd this site will be following along closely and exploring the numbers. The qualification system for Rio2016 is similar to that of London2012, in simple terms the 22 men and top 14 women in the world get entry into the games. Then a quota system is used to select players from the ranking list from a wide variety of nations. As with the last Olympic cycle, the IJF Senior World Ranking List is the most important element in an athletes qualification chances.

 

As with the last cycle we expect to see players approach qualification in different ways. Teams struggled with qualification last cycle and no doubt will again. Although we hope that they have a better understanding of the system than last time around. Only the British have an excuse for not understanding it as last time round they did not need to qualify players; this time the Brazilians have that advantage.

 

The WRL also affects the seeding at each event, and for the games itself. As such, it is really important for athletes to monitor the WRL and manage their entries to try and get as high on the list as they need to be. The next 6 months will be interesting to see how the better teams have chosen to distribute the athletes. We have seen many of the big names getting rehab since London and many have obviously been taking time out and getting set for the trials and traumas that follow.

 

I personally am very interested in how strategic entry into events affects the WRL. So, stay tuned as this site will try and be very active for the next two years leading up to Rio2016. A new resource is available to us now also, the newly launched IJF http://judobase.org site contains the absolute best data direct from the IJF on every event (its a IJF only http://judoinside.com ).

 

Lance

Scoreboard activity at 2013 Paris Grand Slam.

Day One:

Scoreboard actions: 1137

  • Ippon (minute 1): 16
  • Ippon (minute 2): 30
  • Ippon (minute 3): 37
  • Ippon (minute 4): 29
  • Ippon (minute 5): 34

Total: 146 Ippon Actions. The Ippon.org data shows that 80 Ippons were recorded in the final record, so 66 times Ippon was put on the board and later removed for whatever reason.

The total number of scores per minute including ippon broke down as:

Total Scores: 913

  • Minute 1: 163
  • Minute 2: 248
  • Minute 3: 204
  • Minute 4: 142
  • Minute 5: 156

The next post will be the overall numbers for the event including day 2.

 

Tokyo Grand Slam Metrics.

As per previous posts, I have been working on a project to collect data from the IJF scoreboards and store them in a database for later study. In this article I want to share some information I have gained from the 2012 Tokyo Grand Slam.

 

In the last article we looked at day one, in this article we will look at the entire event and discuss a couple of points that come up.

 

How much actually happens at a Grand Slam?

The 2012 Tokyo Grand Slam was a three day event, spread across 3 mats in the elimination rounds. The semi-finals and finals being held on one mat after a two hour break. In total the scoreboards recorded 1,013 changes to the scoreboards. That includes corrections to scores as we have discussed in earlier articles on this website.

The scoring broke down like this:

  • Minute 1: 111
  • Minute 2: 176
  • Minute 3: 160
  • Minute 4: 160
  • Minute 5: 163

 

The Ippons broke down like this:

  • Minute 1: 22
  • Minute 2: 27
  • Minute 3: 31
  • Minute 4: 35
  • Minute 5: 45

Out of those 160 Ippon scores, only 6 were in Golden Score with there being a total of 30 scores in golden score time.

 

A very simple look at the numbers above can suggest that it is in minute 2 you are most likely to be scored against and caught for Ippon most often in the final minute.

 

As per previous posts, the problem with this basic analysis of the 2012 Tokyo Grand Slam is that the data is never as simple as it looks. The software captures every change to the scoreboard and stores it as a record. So the moment the table official hits the Ippon button the database gains an Ippon. Unfortunately errors happen and when the referee changes the score the database gaisn another record but not losing the original Ippon. This means it is hard to use data in the way shown above, especially for scores lower than ippon that don’t stop the match.

 

It is good to collect that data however, we could with relative ease determine how many scoring errors were made. A cursory examination for example shows 154 Ippons on the official record, where the captured data shows 160. So Ippon was put on the scoreboards incorrectly 6 times across three days.

 

We can also look at things like the actual time contests started. The system captures the clock at 5:00 minutes, i.e. the start of the match as the names come on the scorebaord. We can easily collect the timestamps from these records and see for example the distribution of starts across the three days.

  • 11:xx 66
  • 12:xx 72
  • 13:xx 56
  • 14:xx 8
  • 15:xx 0
  • 16:xx 9
  • 17:xx 21
  • 18:xx 11

 

Contests per hour Tokyo Grand Slam 2012
Contests per hour Tokyo Grand Slam 2012

 

What we can see is that the competition (across the three days) had the most fights occur between 12 noon and 1pm. This is a 3 mat event, that in the finals section went to a single mat with a break between elimination and finals.

It would be interesting to look at what scores happened in that 12-1 hour. Perhaps there were more Ippons in this period?

This very brief investigation into the data from the event is provided purely to encourage discussion and investigation by others, I know there are real statisticians out there who could dig out interesting information from the numbers. For me this event was mainly about testing the reliability of the data capture and preparing for the next stage where I shall be doing data collection using a Raspberry Pi computer.

I would love to hear your thoughts and opinions.

Lance

Tokyo Grand Slam 2012 – Day one.

Today was day one of the Tokyo Grand Slam, one of the final events in the 2012 competition schedule.

Today the light weights took to the tatami and you might expect, the Japanese put on a marvelous display of Judo.

Looking at the data I collected form the IJF scoreboards, Ippon was awarded 36 times, with 23 remaining on the permanent record on http://ippon.org
This simple statistic tells us that on 13 occasions the referees awarded Ippon and later adjusted it down to a lesser score. Only 63% of the time did they stick with Ippon after awarding it. Now when looking at this number we have to be careful in reading too much into it and also not considering some of the factors affecting the data.

For example, the 36 number is derived by a simple search for records in the database. The database is populated by a piece of software that waits for a change in the scoreboard and writes one record each time the scores change. So a simple mistaken key press could be an instance here; not just when the referees or commission change a score.

We are also assuming that the 36 and 23 figures are accurate. Both could be wrong, they have not been verified.

Also you need to consider that this is data taken from one day of competition at a specific event. We are at the end of a competition year, post Olympic Games and in Japan. So for example Rishod Sobirov fought up a weight (as is Iliadis Illiadis later in the week). This affects the way people are fighting and the seeding. Obviously Japan has a large team, though it also features younger new players on the scene along with some of their seasoned players.

But this sort of snapshot data is useful, especially if we collect more and more of it over time and are able to grow large reliable sample groups to work with. Today for example the data grew by 296 records, which can be added to the existing data from the few events I have tested the system at to create a set of over 2000 scoreboard actions.

This data could potentially be used for example, to examine when scores are modified most often. The data contains the scoreboard clock data and the actual local time. So we could potentially identify patterns where errors occur. So perhaps (and this is conjecture) corrections happen most at 11:30am, which is perhaps halfway through the elimination rounds. We could use this data to suggest to event organisers a rest period for officials from 11:20 to 11:40 as the data might (again this is purely imaginary) suggest that people are making errors through tiredness.

We could easily discover the nations that score at the start of matches with big scores and those who do so later in matches. We could follow individual players scores over time and see trends in when they score and when they get scored against. Coaches might find this sort of data valuable in their planning.

In summary, collecting this data has proven to be fairly simple and recording it is a database where the information can be analysed is an important next step, one which I hope others will be interested in and maybe after reading this post might contact me with exciting ideas on how the data might be used. If that person is you, then please drop me an email to lw@judocoach.com

Lance

Qingdao Judo Grand Prix 2012 data, day two.

Today was the heavier weights here in Qingdao, so when looking at the data perhaps there is a difference in the pattern to that from day one?

Day 2 (-70, -78, +78, -81, -90, -100, +100), Opening Rounds:

Total Scores: 139

Scores in 1st minute: 21
Scores in 2nd minute: 34
Scores in 3rd minute: 34
Scores in 4th minute: 37
Scores in 5th minutes: 13

Ippon scores in 1st minute: 6
Ippon scores in 2nd minute: 6
Ippon scores in 3rd minute: 9
Ippon scores in 4th minute: 10
Ippon scores in 5th minutes: 5

Day 2 (-70, -78, +78, -81, -90, -100, +100), Gold Medal Fights:

Total Scores: 19

Scores in 1st minute: 1
Scores in 2nd minute: 4
Scores in 3rd minute: 4
Scores in 4th minute: 6
Scores in 5th minutes: 4

Ippon scores in 1st minute: 1
Ippon scores in 2nd minute: 0
Ippon scores in 3rd minute: 1
Ippon scores in 4th minute: 2
Ippon scores in 5th minutes: 2

 

It is also worth noting that the numbers quoted here include all changes to the IJF scoreboards, so includes scores later changed. The minute times mentioned include the golden score as well; so again care must be taken when interpreting the numbers. All this data is included in a database should people be interested in doing some research and analysis.

Of course this is a small sample, but it is interesting none the less to look at the numbers and especially to look at the differences between light and heavy. We need to consider also where we are in the Olympic cycle and how that affects the players attending the event and the level of preparation and focus they might have on the day.

Your comments on this are invited and appreciated.

Preliminary rounds, results:

GP_CHN2012 -100kg Mat:2 2:57 NUNES, Renan (BRA) 100(1)-000(0) DORJ, Anar (MGL)
GP_CHN2012 -100kg Mat:2 2:50 BAUZA, Karolis (LTU) 100(1)-000(0) XU, Xin (CHN)
GP_CHN2012 -81 kg Mat:1 2:04 KHABACHIROV, Murat (RUS) 001(1)-000(1) CHO, Seung Kwon (KOR)
GP_CHN2012 -70 kg Mat:3 0:58 CHEN, Yun-Ting (TPE) 100(0)-000(0) KAUR, Gagandeep (IND)
GP_CHN2012 -100kg Mat:2 2:28 ASANUMA, Takumi (JPN) 000(0)-100(0) XU, Jie (CHN)
GP_CHN2012 -70 kg Mat:3 1:51 MERLI, Nadia (BRA) 000(0)-100(0) OSUMI, Yuka (JPN)
GP_CHN2012 -100kg Mat:2 2:14 MAGOMEDOV, Shamil (RUS) 001(1)-100(2) KIM, Do Hyoung (KOR)
GP_CHN2012 -81 kg Mat:1 0:00 OTGONBAATAR, Uuganbaatar (MGL) 011(0)-000(0) EBI, Yasuhiro (JPN)
GP_CHN2012 -70 kg Mat:3 4:08 VARGAS KOCH, Laura (GER) 110(0)-000(0) CHEN, Rong (CHN)
GP_CHN2012 -81 kg Mat:1 4:24 DAVIS, Thomas (GBR) 100(0)-000(0) GAO, Haiyuan (CHN)
GP_CHN2012 -100kg Mat:2 1:46 CORREA, Luciano (BRA) 100(0)-000(1) ZHAO, Dongming (CHN)
GP_CHN2012 -81 kg Mat:1 3:06 PENALBER, Victor (BRA) 101(0)-000(2) KUMAR, Manoj (IND)
GP_CHN2012 -100kg Mat:2 3:52 KUMAR, Pramod (IND) 000(0)-100(0) KUMASHIRO, Yusuke (JPN)
GP_CHN2012 -70 kg Mat:3 0:00 HAN, Weiyan (CHN) 010(1)-000(3) YOU, Mee Won (KOR)
GP_CHN2012 -81 kg Mat:1 2:23 WU, Wen Shun (TPE) 000(0)-101(0) WANG, Xuewen (CHN)
GP_CHN2012 -100kg Mat:2 3:56 YUAN, Jinling (CHN) 100(0)-000(0) HONG, Yi Chih (TPE)
GP_CHN2012 -81 kg Mat:1 2:42 GAN, Tuvshinjargal (MGL) 101(0)-000(2) TURABOEV, Bekzod (UZB)
GP_CHN2012 -100kg Mat:2 1:14 LIM, Seung Rok (KOR) 000(1)-100(1) HUSSAIN, Shah (PAK)
GP_CHN2012 -78 kg Mat:1 4:01 YANG, Xiuli (CHN) 001(0)-100(0) HIDAKA, Misaki (JPN)
GP_CHN2012 -70 kg Mat:3 0:00 TSEND AYUSH, Naranjargal (MGL) 000(1)-000(0) ZHOU, Chao (CHN)
GP_CHN2012 -90 kg Mat:2 2:25 SINGH, Avtar (IND) 000(1)-100(0) ZHANG, Jun (CHN)
GP_CHN2012 -78 kg Mat:1 1:13 ZHANG, Jie (CHN) 100(0)-000(0) HSU, Hsin-Mei (TPE)
GP_CHN2012 -78 kg Mat:1 4:04 VELENSEK, Anamari (SLO) 100(0)-000(0) CHEN, Ying (CHN)
GP_CHN2012 -78 kg Mat:1 3:15 WANG, Szu-Chu (TPE) 000(0)-100(0) HAN, Li (CHN)
GP_CHN2012 -70 kg Mat:3 0:15 POGACNIK, Anka (SLO) 001(0)-110(1) TAKAHASHI, Rui (JPN)
GP_CHN2012 -90 kg Mat:2 0:00 KIM, Kwang-Ho (KOR) 001(1)-000(2) ZHANG, Zhongbo (CHN)
GP_CHN2012 -81 kg Mat:1 2:18 KHABACHIROV, Murat (RUS) 111(0)-000(0) ZHANG, Wentao (CHN)
GP_CHN2012 -100kg Mat:2 1:43 NUNES, Renan (BRA) 100(1)-000(0) BAUZA, Karolis (LTU)
GP_CHN2012 +100kg Mat:3 0:30 ULZIIBAYAR, Duurenbayar (MGL) 000(0)-100(0) WANG, Quanchao (CHN)
GP_CHN2012 +78 kg Mat:3 5:00 QIN, Qian (CHN) 100(0)-000(0) WOO, Jung-Min (KOR)
GP_CHN2012 -100kg Mat:2 1:53 XU, Jie (CHN) 000(2)-101(0) KIM, Do Hyoung (KOR)
GP_CHN2012 -81 kg Mat:1 1:35 OTGONBAATAR, Uuganbaatar (MGL) 001(0)-000(2) DAVIS, Thomas (GBR)
GP_CHN2012 +78 kg Mat:3 0:00 WANG, Rui (CHN) 002(1)-000(0) ICHIHASHI, Suzuka (JPN)
GP_CHN2012 -81 kg Mat:1 0:00 PENALBER, Victor (BRA) 001(0)-000(2) WANG, Xuewen (CHN)
GP_CHN2012 -100kg Mat:2 0:00 CORREA, Luciano (BRA) 000(2)-001(0) KUMASHIRO, Yusuke (JPN)
GP_CHN2012 +78 kg Mat:3 0:00 ALTHEMAN, Maria Suelen (BRA) 000(2)-002(0) LI, Yang (CHN)
GP_CHN2012 -100kg Mat:2 2:43 YUAN, Jinling (CHN) 101(0)-000(0) HUSSAIN, Shah (PAK)
GP_CHN2012 -81 kg Mat:1 1:57 GAN, Tuvshinjargal (MGL) 001(1)-100(2) LI, Maojian (CHN)
GP_CHN2012 -70 kg Mat:3 1:52 PORTELA, Maria (BRA) 100(0)-000(1) CHEN, Yun-Ting (TPE)
GP_CHN2012 -90 kg Mat:2 3:49 SULEMIN, Grigorii (RUS) 002(4)-100(0) ZHANG, Jun (CHN)
GP_CHN2012 -90 kg Mat:2 0:54 LI, Kunpeng (CHN) 000(0)-101(0) HUH, Chae Goo (KOR)
GP_CHN2012 -78 kg Mat:1 0:00 HIDAKA, Misaki (JPN) 001(0)-000(2) CHOI, Mi-Young (KOR)
GP_CHN2012 -70 kg Mat:3 0:00 OSUMI, Yuka (JPN) 000(1)-100(1) VARGAS KOCH, Laura (GER)
GP_CHN2012 -90 kg Mat:2 0:00 KIM, Kwang-Ho (KOR) 001(1)-000(2) LKHAGVASUREN, Otgonbaatar (MGL)
GP_CHN2012 -78 kg Mat:1 1:29 JUNG, Da Woon (KOR) 010(1)-000(1) ZHANG, Jie (CHN)
GP_CHN2012 -78 kg Mat:1 4:44 VELENSEK, Anamari (SLO) 100(0)-000(0) CHONGTHAM, Jina Devi (IND)
GP_CHN2012 -70 kg Mat:3 0:54 CHEN, Fei (CHN) 001(1)-000(2) HAN, Weiyan (CHN)
GP_CHN2012 -90 kg Mat:2 0:00 CHENG, Xunzhao (CHN) 010(1)-001(0) KITANO, Yuichi (JPN)
GP_CHN2012 -78 kg Mat:1 1:47 POWELL, Natalie (GBR) 010(1)-100(0) HAN, Li (CHN)
GP_CHN2012 -70 kg Mat:3 3:15 ZHOU, Chao (CHN) 100(0)-000(0) TAKAHASHI, Rui (JPN)
GP_CHN2012 +100kg Mat:3 1:42 PASKEVICIUS, Marius (LTU) 100(0)-000(0) WANG, Zhen (CHN)
GP_CHN2012 +100kg Mat:3 4:08 WANG, Quanchao (CHN) 100(0)-000(0) LEE, Po Yen (TPE)
GP_CHN2012 +100kg Mat:3 0:00 SAIDOV, Renat (RUS) 001(1)-000(2) SHEN, Zhuhong (CHN)
GP_CHN2012 +100kg Mat:3 1:05 KIM, Soo-Whan (KOR) 000(2)-001(1) WANG, Qiang (CHN)

Semifinals:

GP_CHN2012 -81 kg Mat:2 0:46 KHABACHIROV, Murat (RUS) 001(0)-000(1) OTGONBAATAR, Uuganbaatar (MGL)
GP_CHN2012 -81 kg Mat:2 2:00 PENALBER, Victor (BRA) 100(0)-000(0) LI, Maojian (CHN)
GP_CHN2012 -70 kg Mat:2 2:29 PORTELA, Maria (BRA) 002(0)-001(0) VARGAS KOCH, Laura (GER)
GP_CHN2012 -70 kg Mat:2 0:00 CHEN, Fei (CHN) 010(1)-000(3) ZHOU, Chao (CHN)
GP_CHN2012 -90 kg Mat:2 0:00 ZHANG, Jun (CHN) 001(0)-000(1) HUH, Chae Goo (KOR)
GP_CHN2012 -90 kg Mat:2 2:36 KIM, Kwang-Ho (KOR) 000(0)-100(1) CHENG, Xunzhao (CHN)
GP_CHN2012 -78 kg Mat:2 0:51 HIDAKA, Misaki (JPN) 000(2)-001(0) JUNG, Da Woon (KOR)
GP_CHN2012 -78 kg Mat:2 4:24 VELENSEK, Anamari (SLO) 100(0)-000(0) HAN, Li (CHN)
GP_CHN2012 -100kg Mat:2 0:00 NUNES, Renan (BRA) 002(0)-001(1) KIM, Do Hyoung (KOR)
GP_CHN2012 -100kg Mat:2 0:00 KUMASHIRO, Yusuke (JPN) 001(1)-000(0) YUAN, Jinling (CHN)
GP_CHN2012 +78 kg Mat:2 2:54 QIN, Qian (CHN) 101(0)-000(0) WANG, Rui (CHN)
GP_CHN2012 +78 kg Mat:2 0:00 LI, Yang (CHN) 000(2)-001(1) YU, Song (CHN)
GP_CHN2012 +100kg Mat:2 2:09 PASKEVICIUS, Marius (LTU) 110(0)-000(1) WANG, Quanchao (CHN)
GP_CHN2012 +100kg Mat:2 0:00 SAIDOV, Renat (RUS) 010(2)-001(3) WANG, Qiang (CHN)

Gold Medal Fights:

GP_CHN2012 -81 kg Mat:2 2:43 KHABACHIROV, Murat (RUS) 000(0)-100(0) PENALBER, Victor (BRA)
GP_CHN2012 -70 kg Mat:2 1:59 PORTELA, Maria (BRA) 000(1)-100(1) CHEN, Fei (CHN)
GP_CHN2012 -90 kg Mat:2 1:27 ZHANG, Jun (CHN) 000(1)-100(1) CHENG, Xunzhao (CHN)
GP_CHN2012 -78 kg Mat:2 0:00 JUNG, Da Woon (KOR) 000(2)-102(0) VELENSEK, Anamari (SLO)
GP_CHN2012 -100kg Mat:2 4:41 NUNES, Renan (BRA) 000(0)-100(0) KUMASHIRO, Yusuke (JPN)
GP_CHN2012 +78 kg Mat:2 0:00 QIN, Qian (CHN) 000(1)-000(1) YU, Song (CHN)
GP_CHN2012 +100kg Mat:2 0:04 PASKEVICIUS, Marius (LTU) 110(2)-001(1) SAIDOV, Renat (RUS)

 

 

 

Qingdao Grand Prix 2012 data, day one.

In this article are some simple statistics gathered at the 2-12 Qingdao Judo Grand Prix.

Day 1 (-48, -52, -57, -63, -60, -66, -73), Opening Rounds:

Total Scores: 227

Scores in 1st minute: 43
Scores in 2nd minute: 45
Scores in 3rd minute: 57
Scores in 4th minute: 48
Scores in 5th minutes: 34

Ippon scores in 1st minute: 11
Ippon scores in 2nd minute: 7
Ippon scores in 3rd minute: 11
Ippon scores in 4th minute: 13
Ippon scores in 5th minutes: 6

Day 1 (-48, -52, -57, -63, -60, -66, -73), Gold Medal Fights:

Total Scores: 36

Scores in 1st minute: 3
Scores in 2nd minute: 7
Scores in 3rd minute: 13
Scores in 4th minute: 5
Scores in 5th minutes: 1

Ippon scores in 1st minute: 1
Ippon scores in 2nd minute: 2
Ippon scores in 3rd minute: 4
Ippon scores in 4th minute: 1
Ippon scores in 5th minutes: 0

The data here includes all scores on the IJF scoreboards, including those later changed which is important to consider. Tomorrow are the heavier weights, so it will be interesting to see if the distribution is similar or not.

 

A site devoted to developing metrics for Judo by Lance Wicks.