	In 1947 O'Hara was converted into a pitcher by then manager Ralph Shinners. In her repertoire she included a fastball, a curve and specially a knuckleball, which she loved to use. She turned in a 6–8 record with a 3.51 earned run average in 21 appearances. The next year she went 4–6 in 20 games while lowering her ERA to 3.20. Used sparingly in 1949, she had a 2–3 mark and a 4.65 ERA in 11 games.