Sebastian Ofner defeated C. O'Connell 6-7 7-6 7-5 in the Tokyo round of 32 on hard. The upset overturned the form book — C. O'Connell came in ranked #117.
Ofner S. came through in three sets.
Sebastian Ofner beat C. O'Connell 6-7(2) 7-6(5) 7-5. Umpiry, "Sebastian Ofner vs C. O'Connell — Tokyo Round of 32", https://umpiry.com/match/2023-10-16/o-connell-vs-ofner-tokyo-r32?utm_source=cite (as of 16 October 2023).