Derek Norris hit his first home run of the season, but it was not enough to give the Potomac Nationals a win.
The Nationals fell 6-4 to the Frederick Keys in game three of a four-game series.
Frederick broke a 4-4 tie by scoring two runs in the eighth inning.
Michael Burgess hit his fifth home run of the year for the Nationals (17-23).
Tyler Moore had two hits and Boomer Whiting stole two bases.
Starting pitcher A.J. Morris struck out five and issued no walks in five and a third innings.
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