O'Neill went 1-for-2 with a solo home run and a walk in Wednesday's 6-1 win over the White Sox.
The veteran outfielder launched his first homer Wednesday since May 16 in Washington. With Dylan Beavers recently returning from the injured list, O'Neill is likely to remain stuck in a part-time role in the outfield going forward. O'Neill is slugging a career-low .295 this season and is also batting a paltry .187 with three homers, six doubles and nine RBI over 159 plate appearances.