Steve Kerr is a retired professional basketball player, former basketball commentator, and current head coach of the Golden State Warriors. He's won five NBA Finals as a player (three with the Chicago Bulls, two with San Antonio Spurs) and three as a coach with the Warriors. He is also one of only two players to have won four consecutive Finals without having been part of the 1960's Boston Celtics.
As a player, he was known for his deadly accurate three-point shot, having one of the highest three-point percentages in the history of the NBA. Coaches primarily kept him in reserve and relied on him to secure wins at critical moments, such as in Game 6 of the 1997 NBA Finals, when he took a pass from Michael Jordan in the final seconds and sank a three-pointer that broke a tie with the Utah Jazz and won the Bulls the championship that year.
As a coach, he became the first rookie coach to win the NBA Finals in 2015 with the Golden State Warriors and he and the team brought home the championship in 2017 and 2018 as well. In 2016, the Warriors broke the record for most wins in a season, which was previously held by the Chicago Bulls when Kerr was a player in 1996. However, Kerr was out for most of that season due to health issues while he was credited with the wins, it was actually interim head coach Luke Walton who led the team for most of those wins. Kerr has noted that it was ridiculous that Walton couldn't receive credit for his accomplishments.