Jason Castro and Chris Carter homered in the fourth inning to give Houston the lead and the Astros held on for a 4-3 win over the Chicago White Sox on Saturday night.
The game was tied at 1-1 when Castro launched a solo homer into the bullpen in right-center to start the fourth inning. Carter's one-out homer clanged off the foul pole in left field to extend the lead to 3-1 and leave starter John Danks (1-3) shaking his head.
Brandon Barnes's double drove in a run in the fifth inning to make it 4-1.
Adam Dunn hit his 18th homer to start the seventh and Gordon Beckham's ground-rule double made it 4-3.
Harrell (5-7) allowed seven hits and three runs with a season-high seven strikeouts in 6 2-3 innings.
Danks yielded five hits and four runs in six-plus innings.