Red Sox manager John Farrell said the team likely will place struggling starter Justin Masterson on the disabled list due to general fatigue, ruling out the pitcher's start Sunday, per NESN.

Masterson was hit hard Tuesday, giving up six earned runs in 2 1/3 innings against the Athletics, after which Farrell said that "clearly he's not right." Masterson has allowed 10 earned runs in his last two starts. He said he was "not real happy" about the decision to go on the DL, but that he realized his last two outings were not up to par. 

While Farrell didn't indicate who would start Sunday, signs point to Steven Wright getting the nod.