The San Antonio Spurs announced that Erin Popovich, the wife of coach Gregg Popovich, passed away on Wednesday. “With deep regret the San Antonio Spurs announce that Erin Popovich, wife of Spurs Head Coach Gregg Popovich, passed away earlier today,” the statement read. “Erin and Gregg were married for four decades and were blessed with two children and two grandchildren.” According to the San Antonio Express-News, Popovich died after a lengthy illness. She was 67. The Spurs announced Thursday that assistant coach Ettore Messina will replace Popovich on the sidelines for Game 3.