Rachel Nichols, David Fizdale and Brian Windhorst react to a successful coach's challenge from San Antonio Spurs vs. Miami Heat, in which Becky Hammon convinced Gregg Popovich to throw the proverbial flag, much to the ire of Erik Spoelstra. They then discuss the future of the challenge in the NBA, with Windhorst warning coaches and fans that it's not going anywhere.TheJump NBA Sports