#63: Justin Masterson - pitcher. Photo by David Richard, USA TODAY Sports.
CLEVELAND -- Cleveland All-Star Justin Masterson is set for an MRI and other tests today to try to find the source of the soreness near his rib area.
The 14-game winner was pulled from last night's loss to Baltimore in the second inning after the problems developed. The Indians are hoping it's nothing serious.
The loss of Masterson for any amount of time would be a major blow to their postseason chances.
He's their unquestioned ace, leading the team in wins (14) and innings (190 1-3), and the 28-year-old is tied for the league lead with three shutouts