| First Round | |||||
| 7 Joao Sousa | |||||
| Tim Smyczek | |||||
| Pre-Match | |||||
| First Round | |||||
| Bradley Klahn | |||||
| Bernard Tomic | |||||
| Pre-Match | |||||
| First Round |
| 4 Damir Dzumhur |
| Bye |
| First Round |
| 3 Borna Coric |
| Bye |
| First Round |
| 2 Stefanos Tsitsipas |
| Bye |
| First Round |
| 1 David Goffin |
| Bye |
| First Round | |||||
| Viktor Troicki | |||||
| Guillermo Garcia-Lopez | |||||
| Pre-Match | |||||
| First Round | |||||
| Dusan Lajovic | |||||
| Pierre-Hugues Herbert | |||||
| Pre-Match | |||||
| First Round | |||||
| Yoshihito Nishioka | |||||
| Denis Kudla | |||||
| Pre-Match | |||||
| First Round | |||||
| Cameron Norrie | |||||
| Di Wu | |||||
| Pre-Match | |||||
| First Round | |||||
| 8 Andreas Seppi | |||||
| Albert Ramos-Vinolas | |||||
| Pre-Match | |||||
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