KISSIMMEE, Fla. -- Atlanta Braves pitcher Tommy Hanson has been diagnosed with a mild concussion after wrecking on his way to spring training.

Manager Fredi Gonzalez said Tuesday that Hanson will miss the first two days of spring training, then gradually work his way back into a normal routine. If there are no setbacks, he should be back at full strength within a week.

Hanson blew out a tire Monday near the Braves' Disney World complex and may have bumped his head on either the windshield or the steering wheel. The right-hander was diagnosed with a Grade 1 concussion but apparently has no other injuries.

Hanson is expected to be one of the team's top starters in 2012. He was 11-7 with a 3.60 ERA last season despite a shoulder injury.