Clase went 3-for-3 with a walk, a two-run home run and a second run scored in Wednesday's 6-1 win over the Red Sox.
The 22-year-old ripped his first career homer in the seventh inning off Josh Winckowski by lofting a cutter over the fence in right field. Clase has looked good in his September cup of coffee with the Blue Jays, going 6-for-12, and he figures to head into spring training next year with a chance to win a regular spot in the outfield.