Reds starter Johnny Cueto left Saturday's outing against the Pirates in the fifth inning with an apparent injury to his right triceps. He was visited by trainers and manager Dusty Baker after throwing a pitch to Travis Snider and could be seen pointing to the back of his right arm.

The right-hander threw one warm-up pitch before walking off the field. He was replaced on the mound by Alfredo Simon.

Cueto allowed one run on two hits over 4 1/3 innings before the early exit. He also struck out three and walked one while throwing 52 pitches, 35 for strikes.

His next start -- if healthy -- is scheduled for Thursday against the Marlins.