John Isner Clay Court Stats & Match Results

John Isner holds a solid clay court record of 82–67 across 149 matches (55.0%). A winning majority across 149 matches shows consistent ability to get results on clay. Claimed 1 title on clay: Houston.

At Grand Slam level (Roland Garros): a positive 22–14 (61.1%) across 36 matches — a player who generally rises to the occasion at the Slams on clay.

ATP Masters 1000 on clay (Monte Carlo, Madrid, Rome): a positive 26–20 (56.5%) across 46 matches — winning above .500 at this level, week in week out, is a genuine sign of quality on clay.

4 finals reached on clay — won 1, lost 3 (25% conversion) — capable of reaching finals consistently, with room to improve at the decisive moment. 7 semifinals. 17 quarterfinals.

vs. Top 10 on clay: 5–16 (23.8%, 21 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: 26–19 (57.8%); best-of-three: 56–48 (53.8%). Slightly better in five-set matches on clay — a positive sign for the Slams specifically.

Best season: 2021 — 5–2 (71.4%) from 7 matches. The best single-season display to date — a useful reference point as the clay record continues to develop.