The Red Sox on Tuesday placed left-hander Drew Pomeranz on the 10-day disabled list with biceps tendinitis, interrupting a disappointing season for the returning 17-game winner.
Pomeranz was placed on the DL retroactive to June 2. He'll be replaced on the roster by reliever Brandon Workman, and he'll likely be replaced in the rotation by knuckleballer Steven Wright, who starts on Tuesday, though the Red Sox will first give Pawtucket left-hander Jalen Beeks a spot start on Thursday for his big-league debut.
"Coming out of the Houston start, it was kind of hard for him to bounce back, so we decided to put him on the DL," said Red Sox manager Alex Cora.
Pomeranz is just 1-3 with a 6.81 ERA in eight starts. He allowed four runs in five innings in his last start against the Astros and has produced only two quality starts on the season.
"It happened after this one, this last one," Cora said. "Hopefully it's something that he'll come back right away."
The Red Sox had already planned to push the entire rotation back a day by starting Wright on Tuesday, and Cora doesn't want to disrupt that plan, so a spot starter will be summoned on Thursday. The other option would have been to move everyone to their original days.
"We had our plan already set up with the guys, pushing them back, and we feel they need that for them to catch a breather," Cora said. "No way we were going to move them up after their mind was set to have their off days and go through their preparation that way."
Beeks is 3-3 with a 2.56 ERA in 10 starts at Triple-A.