Gennett's two-run shot was his 13th this season, while Suarez has 15 homers. Adam Duvall added a solo blast -- his 12th -- and Scott Schebler contributed two hits and a run scored. Tucker Barnhart had two hits and an RBI as Cincinnati took both games of the series.
Tyler Mahle (6-6) limited the Tigers to two runs on five hits while striking out eight in six innings. Raisel Iglesias got the last three outs for his 11th save.
Jeimer Candelario and Niko Goodrum homered for Detroit and Jose Iglesias added three hits and an RBI. Detroit starter Michael Fulmer (3-6) allowed three runs on five hits in 5 2/3 innings and tied his season high with nine strikeouts.
Mahle struck out leadoff hitter Leonys Martin on three pitches in the first. Candelario then drove his next pitch to the opposite field, and the ball barely cleared the left-field wall for his 11th homer this season.
Goodrum, batting cleanup, made it 2-0 in the fourth when he drilled a 2-2 changeup over the center field wall.
Detroit loaded the bases with two outs in the sixth but Fulmer was due up. The result was predictable as Fulmer, who is still seeking his first career hit, struck out on three pitches.
Cincinnati took a 3-2 lead in the sixth with a power display. Schebler led off the inning with a double but Fulmer set down the next two batters. Gennett then pulled a 1-2 pitch over the right field wall.
Suarez then hit the next pitch over the left field wall. It was originally ruled a double, but the call was overturned upon review.
The Reds tacked on a run against Detroit's bullpen on consecutive singles by Billy Hamilton, Schebler and Barnhart in the seventh.
Detroit used its speed to close the gap in the eighth. JaCoby Jones reached on an infield single, stole second and scored on Iglesias' infield hit.
Duvall homered in the bottom of the inning.
(This story has not been edited by Devdiscourse staff and is auto-generated from a syndicated feed.)