Lynn was placed on the 10-day injured list Tuesday with right knee inflammation.
It's unclear whether Lynn is dealing with a serious injury or if the division-leading White Sox are just being precautionary and managing his workload with the postseason a month away. A minimum stay on the IL would cause the righty, who most recently allowed seven runs to the Cubs on Saturday, to miss only one start. Reynaldo Lopez figures to fill Lynn's rotation spot for however long he's sidelined.