Abreu is not in the lineup for Saturday's game against the Tigers, Pete Abraham of The Boston Globe reports.
The 25-year-old will head to the bench against lefty Tarik Skubal, which is standard procedure whenever the Red Sox face a southpaw. Abreu has made just five starts against lefties all year and is 9-for-49 (.184 average) against left-handed pitching this season. Rob Refsnyder, Jarren Duran and Tyler O'Neill will start in the outfield from left to right while Rafael Devers serves as the designated hitter.