![NHL Public Relations on Twitter: "Explanation of Coach's Challenge at 9:35 of the second period in the @NYIslanders/@BuffaloSabres game. #NYIvsBUF https://t.co/rndEHYICwR" NHL Public Relations on Twitter: "Explanation of Coach's Challenge at 9:35 of the second period in the @NYIslanders/@BuffaloSabres game. #NYIvsBUF https://t.co/rndEHYICwR"](https://pbs.twimg.com/media/CXmB96pWYAArp4Q.png:large)
NHL Public Relations on Twitter: "Explanation of Coach's Challenge at 9:35 of the second period in the @NYIslanders/@BuffaloSabres game. #NYIvsBUF https://t.co/rndEHYICwR"
![What can NBA coaches challenge during games? Explaining the new rule for the 2019-20 season | Sporting News What can NBA coaches challenge during games? Explaining the new rule for the 2019-20 season | Sporting News](https://images.daznservices.com/di/library/sporting_news/93/30/mike-dantoni-getty-102919-ftrjpg_1qoktphbtxa2k1randqbyz7an2.jpg?t=453457518&quality=100)
What can NBA coaches challenge during games? Explaining the new rule for the 2019-20 season | Sporting News
![HugeDomains.com - Shop for over 300,000 Premium Domains | Coaching volleyball, Volleyball, Volleyball skills HugeDomains.com - Shop for over 300,000 Premium Domains | Coaching volleyball, Volleyball, Volleyball skills](https://i.pinimg.com/originals/f8/4b/57/f84b57c396acaa34f089912283764dc4.png)
HugeDomains.com - Shop for over 300,000 Premium Domains | Coaching volleyball, Volleyball, Volleyball skills
![Ex-Michigan Wolverines men's basketball head coach John Beilein ready for challenge of the NBA | News, Sports, Jobs - The Mining Journal Ex-Michigan Wolverines men's basketball head coach John Beilein ready for challenge of the NBA | News, Sports, Jobs - The Mining Journal](https://ogden_images.s3.amazonaws.com/www.miningjournal.net/images/2019/05/16095724/5-16-CUTOUT-coach.jpg)
Ex-Michigan Wolverines men's basketball head coach John Beilein ready for challenge of the NBA | News, Sports, Jobs - The Mining Journal
![After missed call in Toronto Raptors-New York Knicks game, should the NBA implement the coach's challenge? | National Post After missed call in Toronto Raptors-New York Knicks game, should the NBA implement the coach's challenge? | National Post](https://smartcdn.prod.postmedia.digital/nationalpost/wp-content/uploads/2015/11/bkn_knicks_raptors_20151110-5.jpg?quality=100&strip=all&w=642)
After missed call in Toronto Raptors-New York Knicks game, should the NBA implement the coach's challenge? | National Post
![Eli Bienstock on Twitter: "The coach has 5 seconds from the time of the questioned score to challenge the call... the coach does not have 60 seconds to sit around waiting until Eli Bienstock on Twitter: "The coach has 5 seconds from the time of the questioned score to challenge the call... the coach does not have 60 seconds to sit around waiting until](https://pbs.twimg.com/media/D8lJM7zW4AAy_Bw.jpg)