O'Neill is out of the Red Sox's lineup Sunday against the Rays, Christopher Smith of MassLive.com reports.
The Red Sox will start Jarren Duran, Ceddanne Rafaela and Wilyer Abreu in the outfield for the regular-season finale. O'Neill battled multiple injuries this season, and unless he pinch hits Sunday, he'll end his first year in Boston with a slash line of .241/.336/.511, 31 home runs and 61 RBI across 473 plate appearances.