By surface
| Surface | Gabriel Diallo | Gustavo Heide |
|---|---|---|
| Hard | 0 | 1 |
All meetings (1)
| Date | Tour | Tournament | Round | Surface | Winner | Set 1 | Set 2 | Set 3 | Set 4 | Set 5 |
|---|---|---|---|---|---|---|---|---|---|---|
| 2026-02-06 | ATP | Davis Cup QLS R1: BRA vs CAN | Round Robin | Hard | Gustavo Heide | 6-74 | 6-3 | 6-73 |
| Surface | Gabriel Diallo | Gustavo Heide |
|---|---|---|
| Hard | 0 | 1 |
| Date | Tour | Tournament | Round | Surface | Winner | Set 1 | Set 2 | Set 3 | Set 4 | Set 5 |
|---|---|---|---|---|---|---|---|---|---|---|
| 2026-02-06 | ATP | Davis Cup QLS R1: BRA vs CAN | Round Robin | Hard | Gustavo Heide | 6-74 | 6-3 | 6-73 |