BALTIMORE -- Alex Cobb had one bad inning, and it cost the Orioles. Making his ninth start, Cobb allowed a three-run home run to the Nationals' Anthony Rendon in the third inning as the Orioles lost to the Nationals, 6-0, on Monday at Camden Yards.
After Cobb got the first two outs in the third, Trea Turner singled and Bryce Harper walked before Rendon homered to left, his sixth.
In seven innings, his longest start of the season, Cobb (1-7) allowed the three runs on five hits, walking three and striking out three.