Orioles (23-56) vs. Mariners (50-31)
Where: Camden Yards
First pitch: 3:05 p.m.
TV/Radio: MASN/105.7 The Fan
Starting pitchers: Orioles RHP Jimmy Yacabonis (0-0, 15.43 ERA) vs. Mariners RHP Mike Leake (8-4, 4.11 ERA)
What to watch
1. Yacabonis. Jimmy Yacabonis has been undergoing a so-far successful transition from relieving to starting in the minors, and is getting rewarded for it with his first major league start Thursday. Yacabonis has had two relief appearances with the Orioles this season, but has a 1.