Braves starting pitcher Bryce Elder underwent surgery on his right knee Tuesday and will be out three to four weeks, manager Walt Weiss said. The right-hander, who has made 26 starts this season, has been dealing with discomfort since the All-Star break. Elder flew from Philadelphia to Dallas for the procedure, hoping to return for the postseason. Elder is 8-8 with a 4.11 ERA and 15 quality starts, second on the team behind Chris Sale. "In the first half, he was one of the best pitchers on our staff," Weiss said. "He tried to fight through it. He got to a point where we couldn't really do it anymore."

Weiss said Reynaldo López will replace Elder in the Braves' six-man rotation and likely start Wednesday. López has made 11 starts this season but has been on the injured list with left knee inflammation for six weeks. He made three rehab starts with Triple-A Gwinnett. López is 4-3 with a 3.64 ERA in 24 appearances.