Ziegler will serve as Boston's closer whenever Koji Uehara is not available while Craig Kimbrel (knee) remains on the disabled list, Meredith Perri of Mass Live reports. "Koji's our closer," manager John Farrell said after Saturday's win over the Tampa Bay Rays. "On days when he's not going to be available, we've got Brad to turn to."

EDGE Analysis

It looked like Ziegler, who had been closing for Arizona when he was acquired late Friday, could easily step into Boston's closer role after the Kimbrel injury, but Farrell felt Uehara was the better option. He told reporters that he thought it "important to maintain some consistency late in the game, and that's where Koji is going to serve as our closer." So, it looks like Ziegler will fill a late-inning role for Boston, but will not getting save chances like he was getting with the Diamondbacks.