Mason Keen kept the D.C. Grays (10-17) off the board during his six innings of work and the Vienna River Dogs (12-15) beat the D.C. Grays, 3-2.
Keen allowed eight hits, two walks and struck out five.
A walk-off single by Will Malbon gave the Vienna River Dogs the win.
Malbon had a hot bat for the Vienna River Dogs. Malbon went 1-5 and drove in one. He singled in the eleventh inning.
John Cerretani improved to 2-2 on the year by picking up the win for the Vienna River Dogs. He struck out one, walked none and surrendered no hits.
Bo Burrup (2-3) took the loss for the D.C. Grays. He lasted just zero innings, walked one, struck out none, and allowed no runs.