The Triple-A Norfolk Tides were pounded by the Gwinnett Braves, and the series finale between the Double-A Bowie Baysox and Akron Aeros was rained out.
The Single-A Frederick Keys lost to the Wilmington Blue Rocks, and the Single-A Delmarva Shorebirds edged the Lake County Captains.
The short-season Single-A Aberdeen IronBirds fell to the Batavia Muckdogs.
The Rookie-level Bluefield Orioles were beaten by the Kingsport Mets, and the Rookie-level GCL Orioles suffered a loss against the GCL Rays.
Score: Gwinnett Braves 11, Norfolk Tides 3 (Box score)
Recap: Right fielder Jeff Fiorentino was 2-for-3 with a solo home run, a double, a stolen base, two RBIs and a run scored, but the Tides lost, 11-3, to Gwinnett at Harbor Park.
Norfolk starting pitcher Andy Mitchell (9-5) gave up eight runs, seven hits and a walk in six innings. The 30-year-old right-hander also hit a batter.
Tides first baseman Brandon Snyder and shortstop Blake Davis each contributed a double, while left fielder Freddy Guzman was 1-for-3 with a double and a run scored.
Relief pitcher Matt Albers allowed three runs and four hits in one inning for Norfolk.Bowie Baysox (AA)
The matchup between the Baysox and Akron was postponed due to rain. No makeup date was immediately scheduled. The two teams don't play again in Akron this season, but they do have one more series at Prince George's Stadium from Aug. 25-27.
Score: Wilmington Blue Rocks 6, Frederick Keys 5 (Box score)
Recap: First baseman Robbie Widlansky collected a double and an RBI in the Keys' 6-5 loss to Wilmington at Harry Grove Stadium.
Frederick starting pitcher Zach Britton allowed five runs (three earned) and six hits in 4 2/3 innings. The 21-year-old left-hander struck out eight batters and issued three walks.
Relief pitcher Brett Jacobson (0-1) suffered the loss in his debut with the Keys after giving up one run in two innings. He didn't allow any hits, but walked one batter. The go-ahead run scored in the eighth inning after Jacobson threw a wild pitch.
Keys shortstop Pedro Florimon Jr. and left fielder Tyler Henson were both ejected in separate incidents during the game.
Score: Delmarva Shorebirds 2, Lake County Captains 1 (Box score)
Recap: Right fielder Ronnie Welty hit a two-run home run in the first inning, and the Shorebirds held on for a 2-1 victory over Lake County at Arthur W. Perdue Stadium.
Delmarva left fielder Jacob Julius was 2-for-3 with a double, and shortstop Rodolfo Cardona added two hits and a run scored.
Shorebirds starting pitcher Cole McCurry (5-8) gave up four hits and three walks in 5 1/3 scoreless innings, and relief pitcher Brett Bordes allowed one unearned run in one inning for his fourth save of the season.
Third baseman Levi Carolus, who was recently promoted to the Shorebirds from Aberdeen, was 0-for-3 in his debut with the team.
Score: Batavia Muckdogs 3, Aberdeen IronBirds 0, 13 innings (Box score)
Recap: First baseman T.J. Baxter collected four of the IronBirds' five hits, including a double, in a 3-0 loss to Batavia in 13 innings at Ripken Stadium.
Aberdeen starting pitcher Patrick Kantakevich gave up two hits and walked two batters in six scoreless innings, while relief pitcher Jacob Smith (2-2) allowed three runs and four hits in one inning.
Shortstop Garabez Rosa contributed a single for the IronBirds.
Score: Kingsport Mets 9, Bluefield Orioles 3 (Box score)
Recap: Starting pitcher Matt Hobgood (1-1) was roughed up for six runs and nine hits in four innings during the Orioles' 9-3 loss to Kingsport at Bowen Field.
The 19-year-old right-hander struck out two batters and threw a wild pitch for Bluefield. Hobgood has a 6.35 ERA in 17 innings during his first six professional appearances.
Orioles first baseman Mike Flacco was 3-for-5 with two RBIs, and center fielder Michael Planeta contributed three hits and a stolen base.
Shortstop Gary Helmick added a single and two runs scored for the Orioles, but he also committed two fielding errors. Planeta also made a defensive miscue.
Score: GCL Rays 6, GCL Orioles 4 (Box score)
Recap: Center fielder Brenden Webb was 3-for-4 with a double, an RBI and a run scored in the Orioles' 6-4 loss to the Rays.
Orioles third baseman Tyler Stampone was 2-for-5 with a double and an RBI, and shortstop Anyi Tejeda added two hits and an RBI.
Catcher David Calderon contributed a double and two runs scored for the Orioles, and left fielder Jaynnertt Melenciano also hit a double.
Orioles starting pitcher Aaron Wirsch gave up two runs, five hits and three walks in three innings, and relief pitcher Tony Butler (0-1) surrendered two runs and three hits in two innings during his latest injury rehabilitation assignment.