Moncada went 1-for-5 with a solo home run in a 6-4 loss to the Nationals on Wednesday.
The 24-year-old went deep in both installments of the two-game series against the Nationals, giving him three homers overall in the last six games. He is hitting .282 with 12 home runs, 37 RBI, 38 runs and five stolen bases in 234 at-bats this season.