The Baltimore Orioles acquired left-hander Cole Irvin from the Oakland Athletics on Thursday, bolstering their rotation as they look to take a step forward in the ultracompetitive American League East.

Irvin, who turns 29 this week, emerged as a reliable innings eater over the past two seasons, throwing 359⅓ innings at a 4.11 ERA after the A's acquired him from Philadelphia for $100,000.