Steve Kerr of the Golden State Warriors was ineligible to coach the team this season because he coached the Western Conference All-Stars last year, according to Spears.
Kerr was credited for the team's first 39 wins this season despite missing the games to recover from two offseason back surgeries. He returned Friday, which bumped interim coach Luke Walton back to his assistant coach role.
Popovich, 66, has led the Spurs to a 38-7 record this season, the second-best mark in the NBA behind only the Warriors' (41-4). Popovich, who has guided the Spurs to five titles since taking over as the head coach in 1996, will be coaching in his fourth All-Star Game.
Popovich has done another masterful job this season, overseeing the organization's transition from Tim Duncan, Manu Ginobili and Tony Parker as the dominant forces on the roster to forwards Kawhi Leonard and LaMarcus Aldridge leading the way.
Popovich's ability to adapt to the game over the years has kept him atop the coaching ranks for the last two decades. He is known for building depth, resting his veteran players to keep his team fresh in preparation for deep postseason runs and, of course, having one of the game's sharpest tactical minds.