Recap: It was another dominating performance for Matusz (7-0).
The 22-year-old left-hander tossed seven scoreless innings to remain perfect since being promoted to Double-A in the middle of June. Matusz allowed four hits, collected six strikeouts and walked three hitters -- all in the fourth inning.
"I had that one tough inning where I wasn't gripping it the way I should," Matusz said. "I kind of got out of the groove at the same time, but I was able to manage with it and get through that tough inning."
Recap: Center fielder Matt Angle was 2-for-4 with three stolen bases and two runs scored in the Keys' 4-3 win over Salem at Harry Grove Stadium.
Frederick second baseman Ryan Adams was 2-for-3 with a home run and two RBIs, while shortstop Pedro Florimon Jr. added a single, a stolen base and an RBI.
Keys starting pitcher Zach Britton (7-4) allowed three runs and seven hits in 7 2/3 innings. The 21-year-old left-hander struck out four batters, issued one walk and threw a wild pitch.
Relief pitcher Ryan Rodriguez retired the final four batters to pick up his fourth save for the Keys. The 25-year-old left-hander hasn't allowed a run in 10 games since being sent back to Frederick from the Baysox.
Recap: Starting pitcher Bobby Bundy (2-4) allowed three runs and five hits in five innings, and the Orioles were blanked, 3-0, by Princeton at Bowen Field.
Bluefield first baseman Corey Thomas and left fielder Lance West each contributed a double, while third baseman Mike Flacco was 0-for-3 with two strikeouts.
Orioles relief pitcher Chase Phillips struck out five batters, allowed one hit and issued three walks in two scoreless innings. The 22-year-old right-hander has a 0.64 ERA in 14 innings this season for Bluefield.