Reilly Opelka has found clay courts difficult, recording 16–25 across 41 matches (39.0%). The numbers point to a surface that has not consistently suited the game — a key area of opportunity on the calendar. Claimed 1 title on clay: Houston.

At Grand Slam level (Roland Garros): Reilly Opelka has struggled at Grand Slam level on clay: 3–6 (33.3%) in 9 matches. The best-of-five format and elite fields make this the toughest benchmark on this surface.

ATP Masters 1000 on clay (Monte Carlo, Madrid, Rome): Reilly Opelka is 6–8 (42.9%) across 14 Masters matches — below .500 in the Tour's deepest fields. Lifting that record here would unlock better results across the whole clay swing.

One final reached on clay, converted into a title — a perfect finals record on this surface. 3 semifinals. 3 quarterfinals.

vs. Top 10 on clay: 0–4 (0.0%, 4 matches). Top 10 opponents have represented a clear ceiling on clay; addressing that deficit is the single biggest lever for improving the overall record here.

By format on clay — best-of-five: 3–6 (33.3%); best-of-three: 13–19 (40.6%). Slightly stronger in three-set contests on clay, though the five-set record is still respectable.

Best season: 2021 — 6–4 (60.0%) from 10 matches. The best single-season display to date — a useful reference point as the clay record continues to develop.

Reilly Opelka recorded a notable 5-match winning streak on clay — a run that demonstrates consistency across consecutive draws on this surface.

Recent Form 2026: 0–3 (0.0%) on clay. Last 3: L L L