TORONTO — Righthander John Lackey, who left Saturday’s game against Toronto in the fifth inning with an arm injury, flew back to Boston Sunday morning and was given a series of tests.
As of Sunday night, the Red Sox were waiting to get the results of his MRI further interpreted. General manager Ben Cherington said the exam showed Lackey having a strained right biceps.
“We’ll sit down with John [on Monday] and map out what our plan is and what is in his best interests,” manager John Farrell said.
Lackey was scheduled to start Friday. But it seems likely that he is headed to the disabled list for at least two weeks.
“First and foremost is John’s well-being,” Farrell said. “Given all that he’s come through, or in this case just the fact that a pitcher walked off the mound in the midst of an at-bat, we’ve got to be cautious with this.”
The Sox haven’t said who would start in Lackey’s place if needed. Alfredo Aceves followed him to the mound on Saturday and threw 3⅔ innings.
“I feel good and if I need to start, I can start,” Aceves said Sunday. “It’s like a wave, the way you build up. I’m on a good wave.”
With the day off Tuesday, the Sox simply could skip that spot in the rotation for one turn.