Top 4th: Tigers 2, Astros 0
J.D. Martinez took his college teammate Mike Fiers deep to left field for his seventh home run of the season to give the Tigers a 2-0 lead in the fourth inning.
Victor Martinez grounded out to shortstop to leadoff the inning.
Bottom 3rd: Tigers 1, Astros 0
Norichika Aoki notched a single to center field to leadoff the third. George Springer hit a hard ground ball up the middle in the next at-bat, but Ian Kinsler robbed him of a base hit on a diving stop, getting the ball to Jose Iglesias, who nearly turned what would have been a spectacular double play.