SEATTLE — Tampa Bay’s young starter, Blake Snell, dominated early, even setting an American League record with seven straight strikeouts to start the game. It wasn’t enough as veteran star Felix Hernandez outlasted him with a vintage performance. The Seattle Mariners offense eked out a couple runs in the eighth inning, just enough for the 2-1 win and series sweep against Tampa Bay on Sunday. Snell, who was born in Seattle and pitched for nearby Shorewood High School, struck out 12 — including the first seven batters he faced to tie an American League record.