Descriptive only — these are measured surface win rates, not projections.
Tennis players · Tennis · as of 2026-07-19
John Isner (ATP)
Historical measurements from this snapshot.
ATP surface windows: source corpus documented as 2015-2025; career uses all dated corpus matches, while recent starts 2023-01-01 and overlaps the corpus. Published floors apply independently for each metric and window. Exact player match counts and latest match dates are not published. The as-of date records claim computation, not a match cutoff.
- Clay minus hard-court win rate, career
- 1.6 ppPercentile rank 50 among 184 measured profilespct 50 of 184 measured
- Clay-court win rate, career
- 59.7%Percentile rank 84 among 190 measured profilespct 84 of 190 measured
- Grass minus overall win rate, career
- 8.5 ppPercentile rank 80 among 153 measured profilespct 80 of 153 measured
- Grass-court win rate, career
- 68.1%Percentile rank 85 among 68 measured profilespct 85 of 68 measured
- Hard-court win rate, career
- 58.2%Percentile rank 84 among 251 measured profilespct 84 of 251 measured
5 of 10 expected measurements not published: Clay minus hard-court win rate, recent, Clay-court win rate, recent, Grass minus overall win rate, recent, Grass-court win rate, recent, Hard-court win rate, recent.
Stored percentiles rank measured rows in this published pack; higher is only higher, not a quality judgement.