Previous Players Coached: Aleksandra Wozniak, Alexa Glatch, Vince Spadea (ATP), Irakli Labadze (ATP)
Coaching Career Highlights:
- Has worked with Caty McNally since childhood, overseeing astounding improvement with the teenager, taking her from a ranking of 722 in singles and 724 in doubles during her first year on tour in 2017 all the way to her career high ranking of 105 in singles and 38 in doubles in 2020
- Under O’Neill, McNally has won two doubles titles in 2019, Luxembourg and Washington (both with Gauff)
- In singles McNally reached the semifinals of Washington (2019)
- McNally peaked in doubles just outside the Top 10, reaching a career-high ranking of No.11 on April 4, 2022
- Led McNally to a career-high singles ranking of No.54 in 2023; won 2022 Midland 125 (d. Friedsam), reached the singles final at 2023 Paris 125 (l. Parry) and the singles semifinals at 2023 Merida (l. Peterson)