The Triple-A Norfolk Tides blanked the Gwinnett Braves, while the Double-A Bowie Baysox scored late to beat the Akron Aeros.
The Single-A Frederick Keys fell to the Potomac Nationals, and the Single-A Delmarva Shorebirds lost to the Hickory Crawdads.
The short-season Single-A Aberdeen IronBirds pounded the Oneonta Tigers.
The rookie-level Bluefield Orioles held on for a win over the Pulaski Mariners, and the rookie-level GCL Orioles topped the GCL Reds.
After tonight's game, the IronBirds announced that catcher Zach Booker was transferred from Aberdeen to the Baysox.
Score: Norfolk Tides 5, Gwinnett Braves 0 (Box score)
Recap: Starting pitcher Chris Tillman (6-5) tossed 7 2/3 scoreless innings in the Tides' 5-0 victory over Gwinnett at Harbor Park. The 21-year-old right-hander struck out seven batters, allowed four hits and issued one walk. Tillman threw 67 of his 100 pitches for strikes.
Norfolk third baseman Jolbert Cabrera had a triple and three RBIs, while right fielder Jeff Fiorentino was 2-for-3 with a double, an RBI and two runs scored.
Tides first baseman Brandon Snyder added two hits, and designated hitter Michael Aubrey collected a double and a sacrifice fly.
Relief pitcher Kam Mickolio retired all four batters he faced for the Tides, collecting two strikeouts.Bowie Baysox (AA)
Score: Bowie Baysox 3, Akron Aeros 2 (Box score)
Recap: Third baseman Mike Costanzo delivered with an RBI single in the bottom of the eighth inning to lift the Baysox over Akron, 3-2, at Prince George's Stadium.
"I just went up and tried getting my pitch again, just seeing it and hitting it," Costanzo said. "As soon as it passed [the pitcher], I knew it was getting through."
Bowie center fielder Dave Krynzel was 3-for-4 with a run scored, while right fielder Ambiorix Concepcion added two doubles and a run scored.
The Baysox were the victim of a triple play in the bottom of the fourth.
Baysox designated hitter Danny Figueroa popped up to Akron starting pitcher Josh Tomlin on a bunt attempt. Tomlin turned and fired to second base to force out Concepcion, and Aeros shortstop Carlos Rivero threw to first base to eliminate Baysox catcher Guillermo Rodriguez.
Baysox starting pitcher Tim Bascom gave up two runs and five hits in six innings. The 24-year-old right-hander walked three batters and collected two strikeouts.
"[The outing] was pretty much up and down, effectively ineffective, if you will." Bascom said. "I just kept my team in the game, basically. That's all I can really say."
Relief pitcher Jim Hoey (1-2) tossed two scoreless innings to pick up the victory for Bowie, and Josh Perrault recorded the final three outs for his 15th save of the season.
"Anytime you can get through an inning without giving up any runs or hits ... it's always a momentum builder," Hoey said. "It gets our team back out there to hit, and hopefully we can score some runs."
Shortstop Robert Valido collected two hits and a run scored for the Baysox.
Score: Potomac Nationals 6, Frederick Keys 5 (Box score)
Recap: Right fielder Billy Rowell was 2-for-4 with a two-run home run and two runs scored, but the Keys were edged, 6-5, by Potomac. It was 20-year-old outfielder's eighth home run of the season, and it was only his second since June 1.
Frederick designated hitter Wally Crancer hit a three-run double in the fifth inning, and shortstop Pedro Florimon Jr. was 1-for-2 with a run scored.
Keys starting pitcher Sean Gleason (0-3) gave up six runs (two earned) and eight hits in 4 2/3 innings. The 23-year-old right-hander walked four batters and collected two strikeouts.
Score: Hickory Crawdads 6, Delmarva Shorebirds 5 (Box score)
Recap: Right fielder Ronnie Welty hit a two-run double in the fourth inning and scored a run, but the Shorebirds' comeback fell just short in a 6-5 loss to Hickory at Arthur W. Perdue Stadium.
Delmarva left fielder Kyle Hudson was 2-for-4 with a run scored, and second baseman L.J. Hoes added an RBI.
Shorebirds starting pitcher Ryan O'Shea (5-4) gave up five runs (four earned) and five hits in 4 2/3 innings. The 23-year-old right-hander struck out four batters and issued three walks.
Third baseman Tyler Kolodny was 1-for-3 with a walk and a run scored for the Shorebirds, but he also committed two fielding errors in the game.
Score: Aberdeen IronBirds 10, Oneonta Tigers 1 (Box score)
Recap: Left fielder Lance West hit a three-run home run in the bottom of the seventh inning to power the IronBirds to a 10-1 rout over Oneonta at Ripken Stadium.
Aberdeen right fielder Arthur Bonevacia was 2-for-2 with two walks, three RBIs and two runs scored, and center fielder Richard D'Oleo added two hits, including a triple, and two run scored.
IronBirds starting pitcher Kenny Moreland (3-0) remained perfect this season after tossing six scoreless innings. The 23-year-old right-hander gave up two hits, walked one batter and collected five strikeouts.
Relief pitcher Stephen Procner allowed one run and two hits in the final three innings to pick up his first save of the season for Aberdeen.
Shortstop Blake Davis was 2-for-4 with an RBI and a run scored for the IronBirds, and catcher Justin Dalles picked up his first professional hit.
Score: Bluefield Orioles 4, Pulaski Mariners 2 (Box score)
Recap: Designated hitter Joel Polanco hit a three-run home run in the bottom of the first inning, and the Orioles cruised to a 4-2 win over Pulaski at Bowen Field.
Bluefield second baseman Gary Helmick was 3-for-4, and catcher Dashenko Ricardo added two hits and an RBI.
Starting pitcher Jesse Beal (2-1) allowed one run and two hits in seven innings for the Orioles. The 18-year-old right-hander struck out four batters and issued one walk.
Orioles relief pitcher Josh Dowdy gave up two hits in the ninth, but he escaped without surrendering any runs for his second save of the season.
Score: GCL Orioles 8, GCL Reds 1 (Box score)
Recap: First baseman David Anderson was 3-for-5 with a double, three RBIs and a run scored in the Orioles' 8-1 win over the Reds.
Orioles designated hitter David Rivera collected three hits, including two doubles, and a run scored, while left fielder Edwin Cintron and shortstop Moises Ciriaco each added two hits and two runs scored.
Starting pitcher Zach Clark allowed one unearned run and two hits in four innings for the Orioles, but he didn't factor in the decision. Orioles relief pitcher Dustin Carder (1-0) tossed four scoreless innings to earn the victory.