Harry Thomas held the Vienna River Dogs (18-14) scoreless for 6 2/3 innings to boost the D.C. Grays (15-20) to a 3-0 victory.
Thomas struck out six and allowed two walks and three hits.
Quinn Carpenter racked up two RBIs on one hit for the D.C. Grays. He homered in the ninth innings.
Despite the loss, the Vienna River Dogs' Jordon Accetta dominated the D.C. Grays' batters, giving up three runs and striking out five.
Zack Irwin improved to 1-3 on the year by picking up the win for the D.C. Grays. He struck out two, walked none and surrendered no hits.
Accetta couldn't get it done on the hill for the Vienna River Dogs, taking a loss.