| ||||||||||||||
| China Open | ||
| Surface: Hard | Date: Sep. 29 - Oct. 7 | Seed: None |
| Round | Opponent | W / L | Result |
| First Round | Fabio Fognini | Loss | 6-1, 3-6, 3-6 |
| Chengdu Open | ||
| Surface: Hard | Date: Sep. 24 - Sep. 30 | Seed: None |
| Round | Opponent | W / L | Result |
| First Round | Vasek Pospisil | Loss | 3-6, 4-6 |
| Moselle Open | ||
| Surface: Hard | Date: Sep. 17 - Sep. 23 | Seed: None |
| Round | Opponent | W / L | Result |
| First Round | Pierre-Hugues Herbert | Win | 6-3, 6-4 |
| Second Round | Marton Fucsovics | Win | 6-3, 6-2 |
| Quarterfinals | Ricardas Berankis | Win | 7-6 (7-4), 6-4 |
| Semifinals | Gilles Simon | Loss | 3-6, 1-6 |
| US Open | ||
| Surface: Hard | Date: Aug. 27 - Sep. 9 | Seed: None |
| Round | Opponent | W / L | Result |
| First Round | Nick Kyrgios | Loss | 5-7, 6-2, 4-6, 2-6 |
| Winston-Salem Open | ||
| Surface: Hard | Date: Aug. 19 - Aug. 25 | Seed: None |
| Round | Opponent | W / L | Result |
| First Round | Bye | ||
| Second Round | Guido Andreozzi | Loss | 4-6, 3-6 |
| Generali Open | ||
| Surface: Clay | Date: Jul. 30 - Aug. 4 | Seed: None |
| Round | Opponent | W / L | Result |
| First Round | Jozef Kovalik | Win | 6-1, 6-3 |
| Second Round | Matteo Berrettini | Loss | 3-6, 7-6 (7-3), 1-6 |
| J. Safra Sarasin Suisse Open Gstaad | ||
| Surface: Clay | Date: Jul. 23 - Jul. 29 | Seed: None |
| Round | Opponent | W / L | Result |
| First Round | Matteo Berrettini | Loss | 4-6, 2-6 |
| SkiStar Swedish Open | ||
| Surface: Clay | Date: Jul. 16 - Jul. 22 | Seed: None |
| Round | Opponent | W / L | Result |
| First Round | Pedro Sousa | Loss | 4-6, 3-6 |
| Wimbledon | ||
| Surface: Grass | Date: Jul. 2 - Jul. 15 | Seed: None |
| Round | Opponent | W / L | Result |
| First Round | Pablo Carreno Busta | Win | 3-6, 6-0, 6-7 (5-7), 6-2, 6-1 |
| Second Round | Aljaz Bedene | Win | 6-2, 4-6, 7-6 (7-3), 5-7, 6-3 |
| Third Round | John Isner | Loss | 3-6, 3-6, 4-6 |
| Roland Garros | ||
| Surface: Red Clay | Date: May 27 - Jun. 10 | Seed: None |
| Round | Opponent | W / L | Result |
| First Round | Gregoire Barrere | Win | 4-6, 0-6, 7-5, 6-1, 6-2 |
| Second Round | Damir Dzumhur | Loss | 3-6, 3-6, 7-5, 6-1, 5-7 |
| Open Parc Auvergne-Rhone-Alpes Lyon | ||
| Surface: Clay | Date: May 20 - May 26 | Seed: None |
| Round | Opponent | W / L | Result |
| First Round | Federico Delbonis | Win | 6-7 (7-9), 7-5, 6-4 |
| Second Round | John Isner | Loss | 6-7 (3-7), 3-6 |
| TEB BNP Paribas Istanbul Open | ||
| Surface: Clay | Date: Apr. 30 - May 6 | Seed: None |
| Round | Opponent | W / L | Result |
| First Round | Rogerio Dutra Silva | Loss | 4-6, 4-6 |
| Gazprom Hungarian Open | ||
| Surface: Red Clay | Date: Apr. 23 - Apr. 29 | Seed: None |
| Round | Opponent | W / L | Result |
| First Round | John Millman | Loss | 4-6, 5-7 |
| Grand Prix Hassan II | ||
| Surface: Red Clay | Date: Apr. 9 - Apr. 15 | Seed: None |
| Round | Opponent | W / L | Result |
| First Round | Andreas Seppi | Win | 1-6, 6-3, 6-0 |
| Second Round | Kyle Edmund | Loss | 2-6, 4-6 |
| Miami Open presented by Itau | ||
| Surface: Hard | Date: Mar. 20 - Apr. 1 | Seed: None |
| Round | Opponent | W / L | Result |
| First Round | Ricardas Berankis | Win | 6-1, 4-6, 7-6 (7-4) |
| Second Round | Sam Querrey | Loss | 6-7 (4-7), 1-6 |
| BNP Paribas Open | ||
| Surface: Hard | Date: Mar. 7 - Mar. 18 | Seed: None |
| Round | Opponent | W / L | Result |
| First Round | Stefanos Tsitsipas | Loss | 6-7 (2-7), 2-6 |
| Abierto Mexicano TELCEL | ||
| Surface: Hard | Date: Feb. 26 - Mar. 3 | Seed: None |
| Round | Opponent | W / L | Result |
| First Round | Kevin Anderson | Loss | 4-6, 3-6 |
| Delray Beach Open | ||
| Surface: Hard | Date: Feb. 19 - Feb. 25 | Seed: None |
| Round | Opponent | W / L | Result |
| First Round | John Isner | Loss | 7-5, 3-6, 4-6 |
| New York Open | ||
| Surface: Hard | Date: Feb. 12 - Feb. 18 | Seed: None |
| Round | Opponent | W / L | Result |
| First Round | Bjorn Fratangelo | Win | 6-4, 6-3 |
| Second Round | John Isner | Win | 7-6 (7-5), 3-6, 6-3 |
| Quarterfinals | Kei Nishikori | Loss | 6-4, 3-6, 1-6 |
| Garanti Koza Sofia Open | ||
| Surface: Hard | Date: Feb. 5 - Feb. 11 | Seed: None |
| Round | Opponent | W / L | Result |
| First Round | Jozef Kovalik | Loss | 3-6, 3-6 |
| Australian Open | ||
| Surface: Hard | Date: Jan. 15 - Jan. 28 | Seed: None |
| Round | Opponent | W / L | Result |
| First Round | Marton Fucsovics | Loss | 2-6, 3-6, 6-4, 5-7 |
| Tata Open Maharashtra | ||
| Surface: Hard | Date: Jan. 1 - Jan. 6 | Seed: None |
| Round | Opponent | W / L | Result |
| First Round | Mikhail Kukushkin | Loss | 2-6, 6-7 (4-7) |
| ASB Classic | ||
| Surface: Hard | Date: Jan. 1 - Jan. 13 | Seed: None |
| Round | Opponent | W / L | Result |
| First Round | Jiri Vesely | Loss | 6-3, 1-6, 6-7 (7-9) |
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