NBA: Spurs unsure when Gregg Popovich will return after medical episode

SAN ANTONIO — The San Antonio Spurs are unsure when, or if, Gregg Popovich will return as coach this  NBA season. Popovich suffered an undisclosed medical episode last Saturday about 2 1/2 hours prior to the Spurs’ home game against Minnesota. San Antonio acting head coach Mitch Johnson said Popovich was “not feeling well,” but