Houston's offense was held in check all night as the Astros fell to the Nationals 5-0 at Minute Maid Park on Thursday and were swept in the four-game series.
Lucas Harrell was solid, allowing two earned runs over five innings in the start, but he didn't get any help. Washington opened the scoring with two runs in the fourth inning.
A combination of five Houston relievers gave up three earned runs over the final four innings. Mickey Storey gave up one earned run in the sixth inning, Fernando Rodriguez gave up one in the eighth and Wesley Wright allowed one in the ninth.
At the plate, Brett Wallace had three of Houston's five hits, going 3-for-4. Marwin Gonzalez went 1-for-4.
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