O'Neill went 1-for-2 with a double, two walks and a run scored in Thursday's 7-2 win over the Cubs.
O'Neill made his return from a stint on the 60-day injured list due to a back injury. He played the full game in left field, which is expected to be his short-term spot in the lineup as he gets back up to speed. Through 30 games this season, he has a .234/.301/.351 slash line with two home runs, one stolen base, six RBI and 13 runs scored. He's also striking out at a 33 percent rate, only a notch worse than his career 31.1 percent mark.