| 2018 Results |
| Tata Open Maharashtra |
| 2 | Thiago Monteiro | | 7-6(7-4), 3-2 |
| QF | Mikhail Kukushkin | W | 6-7(3-7), 6-4, 6-2 |
| SF | Benoit Paire | W | 6-7(6-8), 7-6(7-2), 6-1 |
| F | Gilles Simon | L | 6-7(4-7), 2-6 |
| Australian Open |
| 1 | Kyle Edmund | L | 7-6(7-4), 3-6, 6-3, 3-6, 4-6 |
| New York Open |
| 2 | Ernesto Escobedo | W | 3-6, 6-4, 7-6(7-5) |
| QF | Frances Tiafoe | W | 6-3, 5-7, 6-4 |
| SF | Kei Nishikori | W | 6-1, 3-6, 7-6(7-4) |
| F | Sam Querrey | W | 4-6, 6-3, 7-6(7-1) |
| Abierto Mexicano TELCEL |
| 1 | Radu Albot | W | 6-4, 6-3 |
| 2 | Adrian Mannarino | W | 6-3, 6-4 |
| QF | Hyeon Chung | W | 7-6(7-5), 6-4 |
| SF | Jared Donaldson | W | 6-3, 4-6, 6-3 |
| F | Juan Martin del Potro | L | 4-6, 4-6 |
| BNP Paribas Open |
| 2 | Evgeny Donskoy | W | 7-5, 6-4 |
| 3 | Nicolas Kicker | W | 7-6(7-1), 7-6(7-3) |
| 4 | Pablo Carreno Busta | W | 4-6, 6-3, 7-6(8-6) |
| QF | Borna Coric | L | 6-2, 4-6, 6-7(3-7) |
| Miami Open presented by Itau |
| 2 | Nikoloz Basilashvili | W | 6-4, 6-3 |
| 3 | Karen Khachanov | W | 4-6, 6-2, 6-3 |
| 4 | Frances Tiafoe | W | 7-6(7-3), 6-4 |
| QF | Pablo Carreno Busta | L | 4-6, 7-5, 6-7(6-8) |
| Millennium Estoril Open |
| 2 | Stefanos Tsitsipas | L | 7-6(7-3), 3-6, 3-6 |
| Mutua Madrid Open |
| 2 | Mikhail Kukushkin | W | 5-7, 7-6(7-3), 6-2 |
| 3 | Philipp Kohlschreiber | W | 6-3, 7-6(9-7) |
| QF | Dusan Lajovic | W | 7-6(7-3), 3-6, 6-3 |
| SF | Dominic Thiem | L | 4-6, 2-6 |
| Internazionali BNL d'Italia |
| 2 | Aljaz Bedene | L | 4-6, 0-0, retired |
| Roland Garros |
| 1 | Paolo Lorenzi | W | 6-1, 6-2, 6-4 |
| 2 | Pablo Cuevas | W | 6-3, 3-6, 7-6(7-5), 6-4 |
| 3 | Mischa Zverev | W | 6-1, 6-7(3-7), 6-3, 7-6(7-4) |
| 4 | Diego Schwartzman | L | 6-1, 6-2, 5-7, 6-7, 2-6 |
