The Triple-A Norfolk Tides fell to the Toledo Mud Hens, and the Double-A Bowie Baysox topped the Harrisburg Senators in extra innings.
The Single-A Frederick Keys wrapped up the first half with a loss to the Myrtle Beach Pelicans, and the Single-A Delmarva Shorebirds lost to the Lexington Legends in the first-half finale.
The short-season Single-A Aberdeen IronBirds beat the Hudson Valley Renegades.
Score: Toledo Mud Hens 5, Norfolk Tides 1 (Box score)
Recap: Starting pitcher Brandon Erbe (0-10) remained winless this season as the Tides suffered a 5-1 loss to Toledo.
Erbe gave up two runs (one earned) and five hits in five innings.
Norfolk center fielder Matt Angle and right fielder Jeff Salazar each collected a single and a double, while third baseman Josh Bell added an RBI.
Score: Bowie Baysox 5, Harrisburg Senators 4, 11 innings (Box score)
Recap: First baseman Brandon Waring hit a walk-off home run in the 11th inning to lift the Baysox to a 5-4 win over Harrisburg at Prince George's Stadium.
Bowie right fielder Joel Guzman added two solo shots in the victory. In 63 games this season, Guzman is batting .272 with an Eastern League-leading 17 home runs.
Baysox third baseman Tyler Henson was 2-for-5 with a double, a stolen base and an RBI, while second baseman Ryan Adams also contributed two hits.
Starting pitcher Ryohei Tanaka allowed three runs and eight hits in five innings for Bowie, and relief pitcher Pedro Viola (2-0) tossed a scoreless frame for the win.
Score: Myrtle Beach Pelicans 5, Frederick Keys 2 (Box score)
Recap: Second baseman Miguel Abreu had a single and two RBIs, but the Keys didn't have much offense in a 5-3 loss to Myrtle Beach.
As a team, Frederick managed only four singles in the game.
Keys center fielder Kyle Hudson was 1-for-3 with a stolen base and a run scored, while shortstop Greg Miclat also scored a run.
Frederick starting pitcher Ryan O'Shea allowed two runs (one earned) and five hits in five innings, while relief pitcher John Mariotti (2-2) surrendered three runs (two earned) and four hits in three frames.
Score: Lexington Legends 6, Delmarva Shorebirds 3 (Box score)
Recap: First baseman Tyler Stampone was 3-for-4 with a double and two RBIs in the Shorebirds' 6-3 loss to Lexington at Arthur W. Perdue Stadium.
Delmarva designated hitter Levi Carolus hit his first home run of the season, a solo shot in the second inning, and left fielder T.J. Baxter was 2-for-2 with three stolen bases.
Shorebirds starting pitcher Bobby Bundy gave up three runs (two earned) and four hits in five innings, while relief pitcher Nicholas Haughian (4-2) was charged with three runs and five hits in 2 2/3 innings.
Score: Aberdeen IronBirds 4, Hudson Valley Renegades 0 (Box score)
Recap: Second baseman L.J. Hoes was 2-for-4 with a double, a stolen base and two runs scored in the IronBirds' 4-0 win over Hudson Valley at Ripken Stadium.
Aberdeen designated hitter Mike Flacco added an RBI single, and right fielder Tyler Kolodny contributed a stolen base and a sacrifice fly.
IronBirds starting pitcher Justin Moore (1-0) gave up four hits in five-plus scoreless innings. Moore struck out five batters and issued four walks.
Third baseman Adam Gaylord was 2-for-4 with a double for Aberdeen.