Masterson allowed three runs (two earned) on two hits and three walks while striking out two in 1.2 innings in a rehab start for Triple-A Pawtucket. He threw 50 pitches, 30 strikes. Masterson had been scheduled to throw three innings, but the pitch count ran up and he was unable to get out of the second inning. He'll get another couple of starts at a minimum before the Red Sox determine his next step. At this point, there are a few moving pieces on the roster and it's not certain Masterson will return as a starter.