Spurs head coach Gregg Popovich will reportedly be out indefinitely over the weekend due to health issues

According to ESPN's Shams Charania, San Antonio Spurs head coach Gregg Popovich will reportedly be sidelined indefinitely after suffering health issues over the weekend. Assistant Mitch Johnson is expected to be the interim coach while Popovich is out.

The health issue, which was not disclosed, surfaced before the Spurs faced the Minnesota Timberwolves on Saturday. The team announced that the 75-year-old Popovich would not be able to coach the game and Johnson would assume head coaching duties.

Johnson, who was informed two and a half hours before the game that he would be taking over as head coach, told the media that Popovich “just wasn't feeling well.” The Spurs defeated the Wolves 113-103 and Johnson's performance on the sideline earned rave reviews from veteran Chris Paul.

“Mitch did a great job, man,” Paul said after Saturday’s win. “I think our entire coaching staff did. Things happen all the time in this league, and just like with players, it's the next man up that counts. So kudos to Mitch, he did a great job tonight.”

Popovich is in his 29th season with the Spurs, making him the longest-tenured head coach in the league. He leads the NBA with 1,391 career wins and another 170 postseason wins. He has also coached five teams to NBA titles.