Rafael Devers drilled a two-run homer as the Red Sox topped the Mariners 6-4 to begin the season in Seattle.
Tyler O'Neill added a solo shot in his Boston debut, becoming the first player in AL/NL history to homer in five consecutive Opening Days.
Triston Casas, Ceddanne Rafaela and Connor Wong also plated runs in the victory.
Brayan Bello tossed five innings of two-run ball to pick up the win.
Luis Castillo allowed four runs in five innings of work to take the loss for the M's.
Mitch Haniger and Dylan Moore both hit two-run homers for Seattle in defeat.
Game two of the opening series is tonight at 10.
(Photo by Alika Jenner/Getty Images)
Photo: Alika Jenner / Getty Images Sport / Getty Images