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| Eugene Korea Open Tennis Championships | ||
| Surface: Hard | Date: Sep. 26 - Oct. 2 | Seed: None |
| Round | Opponent | W / L | Result |
| First Round | Chun-hsin Tseng | Loss | 4-6, 0-0 Retired |
| San Diego Open | ||
| Surface: Hard | Date: Sep. 19 - Sep. 25 | Seed: None |
| Round | Opponent | W / L | Result |
| First Round | Jason Kubler | Win | 4-6, 6-3, 0-0 Retired |
| Second Round | J.J. Wolf | Win | 6-3, 7-5 |
| Quarterfinals | Jenson Brooksby | Win | 6-4, 4-6, 7-5 |
| Semifinals | Brandon Nakashima | Loss | 4-6, 6-7 (3-7) |
| US Open | ||
| Surface: Hard | Date: Aug. 29 - Sep. 11 | Seed: None |
| Round | Opponent | W / L | Result |
| First Round | James Duckworth | Loss | 6-4, 6-7 (0-7), 2-6, 3-6 |
| Winston-Salem Open | ||
| Surface: Hard | Date: Aug. 21 - Aug. 27 | Seed: None |
| Round | Opponent | W / L | Result |
| First Round | Adrian Mannarino | Loss |
| BOSS OPEN | ||
| Surface: Grass | Date: Jun. 6 - Jun. 12 | Seed: None |
| Round | Opponent | W / L | Result |
| First Round | Andy Murray | Loss |
| Roland Garros | ||
| Surface: Red Clay | Date: May 22 - Jun. 5 | Seed: None |
| Round | Opponent | W / L | Result |
| First Round | Aljaz Bedene | Loss |
| Gonet Geneva Open | ||
| Surface: Clay | Date: May 15 - May 21 | Seed: None |
| Round | Opponent | W / L | Result |
| First Round | Albert Ramos-Vinolas | Win | |
| Second Round | Reilly Opelka | Loss |
| Dubai Duty Free Tennis Championships | ||
| Surface: Hard | Date: Feb. 21 - Feb. 26 | Seed: None |
| Round | Opponent | W / L | Result |
| First Round | Andy Murray | Loss |
| Qatar ExxonMobil Open | ||
| Surface: Hard | Date: Feb. 14 - Feb. 19 | Seed: None |
| Round | Opponent | W / L | Result |
| First Round | Alex Molcan | Loss |
| Australian Open | ||
| Surface: Hard | Date: Jan. 17 - Jan. 30 | Seed: None |
| Round | Opponent | W / L | Result |
| First Round | Hugo Gaston | Win | |
| Second Round | Diego Schwartzman | Win | |
| Third Round | Maxime Cressy | Loss |
| Sydney Tennis Classic | ||
| Surface: Hard | Date: Jan. 10 - Jan. 15 | Seed: None |
| Round | Opponent | W / L | Result |
| First Round | Sebastian Baez | Loss |
| Melbourne Summer Set 1 | ||
| Surface: Hard | Date: Jan. 4 - Jan. 9 | Seed: None |
| Round | Opponent | W / L | Result |
| First Round | Jordan Thompson | Loss |
