Even when Justin Masterson is throwing his best against left-handed hitters, “I’m still not good against them,” he said on Saturday afternoon.
Masterson, who was signed to a one-year deal worth $9.5 million with incentives to pitch out of the Red Sox rotation, has a new opportunity in front of him in the second half of the 2015 season. Moved to the bullpen, where he’ll stay for the foreseeable future, the sidewinding right-hander has a chance to be a force for the Red Sox while pitching almost exclusively to right-handed hitters, who he’s held to a .257 average this season and .