SEATTLE – Victor Martinez and Miguel Cabrera hit two-out homers off Seattle starter Hisashi Iwakuma, Detroit’s Justin Verlander made just one mistake on the mound in 7 2/3 strong innings, and the Tigers beat the Mariners 6-3 on Friday night. Cabrera hit a two-run homer in the third off Iwakuma (3-2) to give the Tigers a 2-0 lead. Martinez followed two innings later with a three-run shot on the 10th pitch of the at-bat and after Seattle intentionally walked Cabrera. It was the 13th homer of the season for Martinez, who had two hits to raise his A.L.-leading average to .347.