De La Rosa was pulled after one inning of his start with Pawtucket on Sunday night, effectively making it a side session and preserving him for a full day of work on Wednesday.
De La Rosa dazzled in his last two starts for Boston before being optioned back to Pawtucket on June 28, allowing just one earned run in a combined 14 innings to bring his ERA down to 2.51. In his most recent start, on July 1 against Durham, De La Rosa ran into some trouble, allowing five earned runs in 5 2/3 innings of work. In five starts this season with the big club, he is 2-2, striking out 30 batters in 32 innings.
Farrell wasn't tipping his hand before Sunday's game with the Orioles.
“Couple of candidates certainly, but nothing yet to announce,” Farrell said. “We’ve got to get through these next couple days to determine who that’s going to be.”
Farrell did disclose, however, that the starter will not come out of the bullpen, which would rule out Felix Doubront, who has made two appearances since being moved to the bullpen in late June.