MESA, Ariz. - San Francisco Giants pitcher Johnny Cueto shows no initial signs of a concussion or serious injury after he was hit in the head by a line drive during a 10-2 loss to the Oakland Athletics.

Cueto was struck in the forehead by Billy Burns' liner on his first pitch Monday night, knocking off his cap. The ball caromed into centre field for a double.

The right-hander was examined by team trainers, took a couple of warmups and finished his three-inning stint. Originally, the Giants announced he was then taken to the hospital for a precautionary examination. Later, the team clarified that he did not go to the hospital and was instead brought back to the club's spring training complex in Scottsdale and treated for a bruise.

The Giants plan to monitor Cueto through Tuesday.