ATP · Head-to-Head Rivalry
Meetings
12
Series
4–8
John Isner first
Last Meeting
Aug 27, 2018
Avg Game Margin
4.3
winner's games minus loser's
John Isner · 48 · Juan Martin del Potro
20082018
Record by Surface
Hard
3–7
Clay
0–1
Grass
1–0
John Isner in green, Juan Martin del Potro in blue.
Series shown from John Isner's perspective.
Every John Isner vs Juan Martin del Potro Meeting
| Date | Tournament | Surface | Winner | Score |
|---|---|---|---|---|
| Aug 27, 2018 | US OpenQuarterfinal | Hard | Juan Martin del Potro | 6-7(5) 6-3 7-6(4) 6-2 |
| May 28, 2018 | Roland GarrosR16 | Clay | Juan Martin del Potro | 6-4 6-4 6-4 |
| Mar 19, 2018 | Miami MastersSemifinal | Hard | John Isner | 6-1 7-6(2) |
| Oct 30, 2017 | Paris MastersQuarterfinal | Hard | John Isner | 6-4 6-7(5) 6-4 |
| Aug 7, 2017 | Canada MastersR64 | Hard | Juan Martin del Potro | 7-5 7-5 |
| Oct 17, 2016 | StockholmR32 | Hard | Juan Martin del Potro | 6-4 7-6(6) |
| Jun 13, 2016 | Queen's ClubR32 | Grass | John Isner | 7-6(2) 6-4 |
| Aug 11, 2013 | Cincinnati MastersSemifinal | Hard | John Isner | 6-7(5) 7-6(9) 6-3 |
| Jul 29, 2013 | WashingtonFinal | Hard | Juan Martin del Potro | 3-6 6-1 6-2 |
| Feb 14, 2011 | MemphisR32 | Hard | Juan Martin del Potro | 6-4 6-3 |
| Mar 12, 2009 | Indian Wells MastersR16 | Hard | Juan Martin del Potro | 7-6(4) 7-6(3) |
| Aug 10, 2008 | WashingtonQuarterfinal | Hard | Juan Martin del Potro | 6-4 6-4 |
Tour-level meetings back to 1968 where available. Dates reflect the tournament start.
Rating & Ranking
| John Isner | Juan Martin del Potro | |
|---|---|---|
| — | ATP Rank | — |
| 1595 | Overall Elo | 1630 |
| 1566 | Hard Elo | 1617 |
| 1557 | Clay Elo | 1570 |
| 1557 | Grass Elo | 1547 |
breakPoint Elo starts every player at 1500 and weights matches by tournament importance — values are internally consistent but not comparable to other published Elo scales.
Form & Activity
| John Isner | Juan Martin del Potro | |
|---|---|---|
| — | 2026 Season | — |
| —0 matches | Last 12 Months | —0 matches |
| 50% | Form (last 5) | 50% |
| — | Form (30 days) | — |
| Aug 28, 2023 | Last Match | Feb 7, 2022 |
Serve & Return
| John Isner | Juan Martin del Potro | |
|---|---|---|
| 92% | Hold % | 86% |
| 11% | Break % | 24% |
| 21.7% | Ace Rate | 10.5% |
| 2.5% | Double Fault Rate | 2.8% |
| 72% | Serve Pts Won | 68% |
| 30% | Return Pts Won | 38% |
Career rates over each player's tracked matches.
Advanced Stats
Advanced stats are for Pro members
Per-Match Averages
| John Isner | Juan Martin del Potro | |
|---|---|---|
| 17.2 | Avg Aces | 7.1 |
| 7.3 | Avg Aces Against | 6.9 |
| 1.3 | Avg Breaks | 2.7 |
| 26.6 | Avg Games | 22.6 |
| 565 | Matches | 302 |
Career averages per best-of-3 match; aces against are opponent aces conceded, breaks are service breaks won. Each stat covers the matches where it was tracked.