Red Sox released RHP Justin Masterson.
Red Sox designated RHP Justin Masterson for assignment.
Red Sox manager John Farrell confirmed Thursday that Justin Masterson will remain in the bullpen to begin the second half of the season.
Justin Masterson will pitch out of the bullpen for the remainder of the first half.
Justin Masterson unraveled in the fourth inning of Friday's loss to the Astros, allowing all five runs on his line before exiting with two outs in the frame.
Justin Masterson, making his first start since May 12, held the Rays to one unearned run in five innings en route to a win on Sunday.
Justin Masterson will start for the Red Sox on Sunday afternoon against the Rays.
Red Sox activated RHP Justin Masterson from the 15-day disabled list.
Justin Masterson (shoulder) is expected to rejoin the Red Sox on Tuesday in a relief role.
Justin Masterson could return to the Red Sox in a bullpen role.
Justin Masterson (shoulder) will make another rehab start with Triple-A Pawtucket on Tuesday.
Justin Masterson (shoulder) will make another rehab start with Triple-A Pawtucket on Wednesday.
Justin Masterson (shoulder) could be cleared to rejoin the Red Sox rotation without requiring another minor league rehab start.
Justin Masterson (shoulder) is scheduled to make his first minor league rehab start with Triple-A Pawtucket on Sunday.