As first relayed by beat writer Mark D. Gonzales of the Chicago Tribune, an MRI taken Wednesday on Jake Peavy’s sore left rib cage revealed a non-displaced fracture and the veteran right-hander is going to be sidelined for at least the next 4-6 weeks.
Peavy felt sharp pain in his left side just 2 1/3 innings into his start on Tuesday night against the Mariners. He surrendered six earned runs on seven hits before exiting, raising his season ERA from 3.62 to 4.30.
Hector Santiago is likely to be moved back into Chicago’s starting rotation on Sunday afternoon to face the A’s. He has spent the past couple of weeks serving as a long reliever.