20

Several types of tracking technology exist, and the type used depends upon the the circumstances of the competition. In training, some teams are now tracking with systems like RedFIR, a German technology comprised of tiny (15 gram) radio transmitters that can be placed in uniforms, footwear or balls, and a network of receivers set up around the field. The ...


17

You are right that the French Open is the only Grand Slam tournament without Hawkeye, The reason is that Clay, unlike grass and hardcourts, leaves a mark that players and umpires can check and verify if the ball was in or out. You can argue that some mistakes can be made but that's quite rare, A hawkeye system is very expensive and the cost/benefit ratio ...


15

The UEFA Champion's League uses goal-line technology. This is an automated system which detects the moment the ball has crossed the goal-line under the crossbar. It sends a signal to the referee via a wrist-mounted alarm unit to show a goal has been scored. This reduces the reliance on precise visual judgements from bad angles. The referee indicated that ...


10

The watch is the part of Goal Line Technology system, Under IFAB LAW 1 - THE FIELD OF PLAY, GOAL LINE TECHNOLOGY (GLT) The indication of whether a goal has been scored must be immediate and automatically confirmed within one second by the GLT system only to the match officials (via the referee’s watch, by vibration and visual signal). (my ...


8

Update: Sorry folks for taking so long to get around to this update - I had to retire this tool in 2016 ago due to nike changing their API, and not having enough time to re-engineer the code, so this is no longer an acceptable solution. Original Post: I wrote a tool to help export workouts from nike+ for upload into other tools like Strava or Runkeeper: ...


7

A lot of professional teams these days use ProZone. This is used for Performance Analysis (which 'distance covered' would probably be included), Physiological Monitoring, Player Recruitment and Research/Consultancy. See here for more details on Player Tracking. Players who wear Adidas boots can also take advantage of the miCoach Speed Cell which covers ...


5

Essentially it hasn't been introduced by UEFA because the top brass don't support it because of the financial cost. Platini says: "I prefer to put more money into youth football and infrastructure than spend it on technology when there's a goal in a blue moon that hasn't been seen by a referee." "It would cost around 54 million euros (£46m) over five ...


5

Note that I've changed this answer several times, to keep up with current status. TLDR: Use Smashrun, then Tapiriik In the previous months/years Nike has been changing the way it provides data; including who it provides it to. I'd been using the exporter by Rhys McCaig for quite some time, but he has since discontinued his tool. I've also tried Tapiriik, ...


5

There are 16 cameras around the field that can track each player's distance traveled within 3% accuracy. Source - WSJ


4

The Android app SyncMyTracks can import and export from and to Nike+, Strava, RunKeeper, Endomondo, Garmin Connect and other services. I've been using it for a few months, and it works great!


4

http://www.rungap.com/ supports a whole bunch of apps including Runkeeper, Garmin and Nike+. Unfortunately, it's doesn't provide online access. Just smartphone app access. Update: Smashrun can import runs from Nike+ and Garmin directly. It also supports importing gpx/tcx files. I have the free membership for now. It is pretty bare bones, but from the looks ...


4

I strongly suspect that the manufacturers of Hawkeye and similar ball tracking systems would actually prefer not to have a hard 'ground truth' to compare to being beamed live to millions of viewers. These systems are not as accurate as the TV graphics imply and there use as part of the umpiring process is not all to do with accuracy. It is as much about ...


4

I looked for recorded instances of the same finishing time by more than 3 runners, and couldn't find any. As was mentioned in the comments, the race you referenced in your question was reported to 0.01 seconds. A quick online search showed that they eventually ruled based on the photo finish camera (those results can be seen in the photo you included in the ...


3

I'm not aware of any iPhone specific service, but you could give the website tennisopolis a try. http://tennisopolis.com/


3

As there is no official wording from Sky Sports on technology behind Rev Counter there were two possible theories, one would be high-speed camera coupled to a computer running an image recognition/analysis program as mentioned in the Physics StackExchange Question. Which would be challenging in that given time frame.Other one is 3D Doppler Tracking that is ...


3

I'm not sure what format the Nike files are, but the Fit File Repair Tool offers the most comprehensive options for conversion from and into the most commonly used formats (fit, tcx, and hrm). On top of that, it lets you fix faulty files, e.g. when the gps or the heart rate monitor went crazy due to interferences. If conversion to tcx is sufficient, I found ...


3

Firstly, compression means less work needed by stabilisers to maintain the position. An example is powerlifting. Secondly, it improves the post-recovery particularly in athletes who have very low recovery HR. Thirdly, they are timeless. Different compression clothes originates from nursing and old people care where for example compression stockings are used ...


3

This is similar to my answer to this question but I felt that it was also appropriate here. Livestrong has a great page that illustrates a lot of points and references medical studies to support it. Some key points: limits extra muscle motion, or "oscillation" ... [which] reduces the amount of energy you are expending assist[s] the hamstrings in ...


3

The (free) online app called Tapiriik provides a great way to sync between many applications. Including endomondo, strave, runkeeper, dropbox, garmin, ride with gps, motivato, and many others.


3

First, Hawk-Eye technology is not available for every court that professional matches are played on. So, in those cases, players can't challenge a call because no Hawk-Eye is available. The chair umpire will inform players before they begin to warm-up if Hawk-Eye will be in use for their match or not. Second, Hawk-Eye tracks the trajectory of each shot ...


3

Clay courts leave a visible mark which shows where the ball lands. This is the reason why the staff at Roland Garros clear the court often during a match so there wont be overlap of marks(or mistake of the actual mark), which can cause confusion. If a ball is questionable, then the referee will come down and check the mark on the court and make his ...


3

Radar gun is used to calculate the bowling speed in cricket.A simple example showing the use on http://www.bigbro.in/blog/how-is-the-bowling-speed-and-lengthdistance-of-the-sixes-hit-in-cricket-measured/ How it works? Radar gun is the current or present technology to calculate the speed of bowl. Radar gun has both radio transmitter and the receiver. This ...


3

I haven't heard much of anything about the balls being faster - but there are definitely other factors that have contributed to serve and volley (S&V) becoming a much less common playing style in tennis these days. The balls used across ATP tournaments are generally the same (Head ATP is the official ball brand of the mens tour currently), with the ...


3

Couldn't they switch on more lights? What is the bad light rule for limited overs cricket? Yes they CAN. But only if it is available for that particular match. Remember, the issue is for day matches only. Umpire's role on bad lights. From Standard ODI match playing conditions PDF: (emphasis mine) 3.7 Use of artificial lights If in the opinion of the ...


3

I found this - https://www.fitnesssyncer.com/ It worked great, did all my runs separately including all the data and routes!


3

Your impression of line calling is incorrect. The ball must physically touch the line to be counted in. An "overhang" as seen from directly above the ball (used in other ball sports such as football or hockey) is not enough. This is easiest to see with clay court games. If the ball clips or skids on the line, it leaves a dusty mark showing this. For close ...


2

Balls can skid much longer distances on clay. On hard courts only the ball measurably changes (deforms) on impact. On clay both the ball and the court are changing simultaneously as a layer of dirt is shifted around. These factors make Hawk-Eye's job more challenging on clay and it would be logical to conclude that Hawk-Eye's margin of error increases on ...


2

Basically, a rangefinder's advantage is that it tells you exactly how close you are to the pin (or to some other object you're rangefinding), instead of approximately how close you are based on your relative distance to some other known marker, like the approach stake. With a good rangefinder, it's possible to get an accurate distance reading (usually within ...


2

Ball Spin RPM - Starting during the TV coverage by Sky sports for the 2013 Ashes series, they were able to show a RPM (revolutions per minute) counter, showing how fast the ball was spinning after release. It is not clear how this is measured, though it would need a high speed camera focussed on the ball, possibly using the same images that are captured for ...


2

I haven't found any technical tool under "indepedent training management" rather mechanical innovations. Firstly, soft ball slows down the features of the ball such as spinning so easier to analyse. Secondly, different field materials help you to understand the behaviour of ball such as spin. Thirdly, a hit wall makes it far faster to trial-and-error ...


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