Left-hander Brian Matusz took a two-hit shutout into the fifth inning, but Jed Lowrie deposited a 91 mph fastball into the left field seats with one out and Mike Lowell on base to reduce the Orioles' lead to 3-2.
The Orioles scored twice in the third on Adam Jones' infield hit and shortstop Marco Scutaro's throwing error.
Luke Scott raced home from first base as the ball rolled into right field. Manager Buck Showalter walked over to Scott in the dugout and engaged him in a lengthy discussion. No idea what that was all about, but Showalter winked at one point and Scott was smiling and receptive to whatever his manager was saying.
Down on the farm, Brandon Snyder hit his ninth home run tonight. Chris Tillman is tossing a five-hit shutout through six innings.
Tyler Townsend hit his third home run for Single-A Frederick. He's accounted for both of the Keys' hits through six innings.
Single-A Delmarva's Matt Hobgood allowed one run and five hits over five innings.
Manny Machado, serving as short-season Single-A Aberdeen's designated hitter, is 0-for-3 with two strikeouts.