SEATTLE (AP) - Jake Peavy will miss at least the next four to six weeks after an MRI revealed the Chicago White Sox starter has a non-displaced rib fracture on the left side of his chest.

The White Sox announced the diagnosis on Wednesday following an exam in Seattle. The only treatment is rest and Peavy will be shut down for that entire stretch.

Peavy left Tuesday night's start against Seattle after 2 1-3 innings and giving up six earned runs. Peavy felt something wrong in his ribs when he was playing catch a day before his start. Still, he thought he could pitch through the discomfort.

After the game, Peavy said it was difficult to even take a deep breath. He had X-rays at the stadium that were inconclusive, leading to the MRI exam.

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