C. O'Connell defeated Valentin Royer 6-4 4-6 7-6 in the Rotterdam round of 32 on hard. The upset overturned the form book — Valentin Royer came in ranked #105, but C. O'Connell had been the form player, winning 7 of their last 10 on hard.
O'Connell C. came through in three sets.
O'Connell C. and Royer V. faced 1 of the same opponent in the last 12 months. O'Connell C. went 0–2 (0%) against them, Royer V. 0–1 (0%).
Only 1 common opponent — too few for any conclusion. Shown without assessment.
C. O'Connell beat Valentin Royer 6-4 4-6 7-6(4). Umpiry, "C. O'Connell vs Valentin Royer — Rotterdam Round of 32", https://umpiry.com/match/2026-02-09/o-connell-vs-royer-rotterdam-r32?utm_source=cite (as of 9 February 2026).