20 Isner John - Sinner Jannik 10
Walkover
| Date | Tournament | Surface | Opponent | W/L | Score | |
|---|---|---|---|---|---|---|
| Oct 11, 2021 | Indian Wells | hard | Nishioka Yoshihito | W | 6-3 6-4 | |
| Sep 25, 2021 | Laver Cup | indoors | Zverev Alexander | L | 6-7 7-6 5-10 | |
| Aug 30, 2021 | US Open | hard | Nakashima Brandon | L | 6-7 6-7 3-6 | |
| Aug 19, 2021 | Cincinnati | hard | Paire Benoit | L | 6-7 7-6 1-6 | |
| Aug 18, 2021 | Cincinnati | hard | Sinner Jannik | W | 5-7 7-6 6-4 | |
| Aug 17, 2021 | Cincinnati | hard | Norrie Cameron | W | 4-6 7-6 6-4 | |
| Aug 15, 2021 | Toronto - Masters | hard | Medvedev Daniil | L | 2-6 2-6 | |
| Aug 14, 2021 | Toronto - Masters | hard | Monfils Gael | W | 7-6 6-4 | |
| Aug 12, 2021 | Toronto - Masters | hard | Rublev Andrey | W | 7-5 7-6 | |
| Aug 11, 2021 | Toronto - Masters | hard | Garin Christian | W | 4-6 6-3 6-4 | |
| Aug 10, 2021 | Toronto - Masters | hard | Davidovich Fokina Alejandro | W | 6-4 6-1 | |
| Jul 24, 2021 | Los Cabos | hard | Nakashima Brandon | L | 5-7 4-6 | |
| Jul 23, 2021 | Los Cabos | hard | Bolt Alex | W | 6-3 6-4 | |
| Jul 22, 2021 | Los Cabos | hard | Donskoy Evgeny | W | 7-5 3-6 7-6 | |
| Jun 30, 2021 | Wimbledon | grass | Nishioka Yoshihito | L | 6-7 6-2 3-6 7-6 4-6 | |
| Jun 04, 2021 | French Open | clay | Tsitsipas Stefanos | L | 7-5 3-6 6-7 1-6 | |
| Jun 02, 2021 | French Open | clay | Krajinovic Filip | W | 7-6 6-1 7-6 | |
| May 31, 2021 | French Open | clay | Querrey Sam | W | 7-6 6-3 6-4 | |
| May 07, 2021 | Madrid - Masters | clay | Thiem Dominic | L | 6-3 3-6 4-6 | |
| May 06, 2021 | Madrid - Masters | clay | Rublev Andrey | W | 7-6 3-6 7-6 | |
| May 05, 2021 | Madrid - Masters | clay | Bautista-Agut Roberto | W | 6-4 6-7 7-6 | |
| May 03, 2021 | Madrid - Masters | clay | Kecmanovic Miomir | W | 6-4 7-6 |
| Date | Tournament | Surface | Opponent | W/L | Score | |
|---|---|---|---|---|---|---|
| Oct 10, 2021 | Indian Wells | hard | Millman John | W | 6-2 6-2 | |
| Oct 03, 2021 | Sofia | indoors | Monfils Gael | W | 6-3 6-4 | |
| Oct 02, 2021 | Sofia | indoors | Krajinovic Filip | W | 6-3 7-5 | |
| Oct 01, 2021 | Sofia | indoors | Duckworth James | W | 7-6 6-4 | |
| Sep 30, 2021 | Sofia | indoors | Gerasimov Egor | W | 6-2 7-6 | |
| Sep 06, 2021 | US Open | hard | Zverev Alexander | L | 4-6 4-6 6-7 | |
| Sep 04, 2021 | US Open | hard | Monfils Gael | W | 7-6 6-2 4-6 4-6 6-4 | |
| Sep 02, 2021 | US Open | hard | Svajda Zachary | W | 6-3 7-6 6-7 6-4 | |
| Aug 31, 2021 | US Open | hard | Purcell Max | W | 6-4 6-2 4-6 6-2 | |
| Aug 18, 2021 | Cincinnati | hard | Isner John | L | 7-5 6-7 4-6 | |
| Aug 16, 2021 | Cincinnati | hard | Delbonis Federico | W | 6-2 7-5 | |
| Aug 11, 2021 | Toronto - Masters | hard | Duckworth James | L | 3-6 4-6 | |
| Aug 08, 2021 | Washington | hard | McDonald Mackenzie | W | 7-5 4-6 7-5 | |
| Aug 07, 2021 | Washington | hard | Brooksby Jenson | W | 7-6 6-1 | |
| Aug 06, 2021 | Washington | hard | Johnson Steve | W | 6-4 6-2 | |
| Aug 05, 2021 | Washington | hard | Korda Sebastian | W | 7-6 7-6 | |
| Aug 04, 2021 | Washington | hard | Ruusuvuori Emil | W | 6-2 6-4 | |
| Jun 28, 2021 | Wimbledon | grass | Fucsovics Marton | L | 7-5 3-6 5-7 3-6 | |
| Jun 14, 2021 | Queen's Club | grass | Draper Jack | L | 6-7 6-7 | |
| Jun 07, 2021 | French Open | clay | Nadal Rafael | L | 5-7 3-6 0-6 | |
| Jun 05, 2021 | French Open | clay | Ymer Mikael | W | 6-1 7-5 6-3 | |
| Jun 03, 2021 | French Open | clay | Mager Gianluca | W | 6-1 7-5 3-6 6-3 | |
| May 31, 2021 | French Open | clay | Herbert Pierre-Hugues | W | 6-1 4-6 6-7 7-5 6-4 | |
| May 20, 2021 | Lyon | clay | Rinderknech Arthur | L | 7-6 2-6 5-7 | |
| May 19, 2021 | Lyon | clay | Karatsev Aslan | W | 0-6 6-3 6-4 | |
| May 12, 2021 | Rome | clay | Nadal Rafael | L | 5-7 4-6 | |
| May 10, 2021 | Rome | clay | Humbert Ugo | W | 6-2 6-4 | |
| May 05, 2021 | Madrid - Masters | clay | Popyrin Alexei | L | 6-7 2-6 | |
| May 04, 2021 | Madrid - Masters | clay | Pella Guido | W | 6-2 4-4 ret | |
| Apr 24, 2021 | Barcelona | clay | Tsitsipas Stefanos | L | 3-6 3-6 | |
| Apr 23, 2021 | Barcelona | clay | Rublev Andrey | W | 6-2 7-6 | |
| Apr 22, 2021 | Barcelona | clay | Bautista-Agut Roberto | W | 7-6 6-2 | |
| Apr 20, 2021 | Barcelona | clay | Gerasimov Egor | W | 6-3 6-2 |