SEATTLE (AP) — Enmanuel Valdez hit a three-run homer, Garrett Whitlock pitched five effective innings and the Boston Red Sox beat the Seattle Mariners 5-1. Valdez, a fill-in second baseman for the injured Vaughn Grissom, hit a drive to right in the fourth after starting the season 0 for 8. Tyler O’Neill connected for a solo shot in the second against Seattle’s Bryce Miller, who was charged with four runs and six hits in five innings. Whitlock helped Boston to a split of the four-game series after it dropped two straight one-run games. The big right-hander allowed three hits, struck out eight and walked none.