SEATTLE (AP) — Robbie Grossman's bases-loaded double keyed a five-run third inning to help the Minnesota Twins beat the Seattle Mariners 7-2 Friday night.

Pat Dean pitched effectively for seven innings for his first major league victory as he allowed two runs on four hits, striking out eight and walking none in his second start and fourth appearance since being called up May 11. Ryan Pressley pitched the eighth and Brandon Kintzler finished.

Seattle ace Felix Hernandez (4-4), who entered with a 2.21 ERA, was tagged for six runs on eight hits in six innings.

The Twins, who won for just the fifth time on the road against 19 losses, rocked Hernandez for five hits, including three doubles, during the third to take a 6-1 lead.

Miguel Sano and Joe Mauer each had solo homers for the Twins, while Franklin Gutierrez homered for Seattle in the first inning.