Some Braves fans were disappointed the team did not sign free agent closer Craig Kimbrel in June.
The former Braves player joined the Chicago Cubs and Atlanta signed veteran starter Dallas Keuchel instead, and later acquired three relievers to shore up the bullpen at the trade deadline on July 31.
Kimbrel has 13 saves but his ERA stands at 5.68 and he was put on the injured list with elbow inflammation on Thursday.
He hasn't pitched since allowing a three-run home run to Milwaukee's Christian Yelich in a 4-0 loss Sunday.
"He felt a little something pop up in that outing so just to be on the cautious side, we had an MRI done," Cubs president of baseball operations Theo Epstein said. "It showed everything is in place structurally. He just has a little inflammation.
"His elbow was pristine just like when we signed him, which is good news, but unfortunately we have to give him a few days without throwing to let it calm down," Epstein said.
Kimbrel had 42 saves for the World Series champion Boston last season, became a free agent and did not agree to a contract until reaching a $43 million, three-year deal with the Cubs on June 7.
He made his debut on June 27, earning his first save of the season with a scoreless ninth inning against the Braves, then allowed five runs over his next two outings. The 31-year-old settled in and converting his next six save opportunities without allowing a run.
Kimbrel has pitched in 21 games and has 26 strikeouts in 19 innings.
Keuchel, meanwhile, has gone 6-5 with a 3.72 ERA for the Braves.
