The Triple-A Norfolk Tides play a road contest against the Charlotte Knights, while the Double-A Bowie Baysox host the Harrisburg Senators in an afternoon game at Prince George's Stadium.
The Single-A Frederick Keys go for the sweep on the road against the Kinston Indians, and the Single-A Delmarva Shorebirds face the West Virginia Power.
The short-season Single-A Aberdeen IronBirds meet the Brooklyn Cyclones.
The Shorebirds added infielder Buck Britton, who was playing in Aberdeen, to their roster in order to fill in for second baseman L.J. Hoes while he is on the temporary inactive list.
at Charlotte Knights (7:15 p.m.)
Norfolk: Troy Patton (1-2, 4.43 ERA)
Charlotte: Carlos Torres (8-4, 2.30 ERA)Bowie Baysox (AA)
Harrisburg Senators (12:05 p.m.)
Bowie: Ryohei Tanaka (0-0, 0.00 ERA)
Harrisburg: Cory VanAllen (2-4, 5.97 ERA)
Record: (6-6 in second half, 37-44 overall)
at Kinston Indians (7 p.m.)
Frederick: Sean Gleason (0-3, 4.45 ERA)
Kinston: Eric Berger (7-5, 2.13 ERA)
Record: (6-8 in second half, 42-41 overall)
at West Virginia Power (7:05 p.m.)
Delmarva: Oliver Drake (4-5, 3.81 ERA)
West Virginia: Casey Erickson (4-3, 2.11 ERA)
at Brooklyn Cyclones (7 p.m.)
Aberdeen: Kenny Moreland (3-0, 0.50 ERA)
Brooklyn: Darin Gorski (0-0, 4.50 ERA)