By surface
| Surface | Serena Williams | Caroline Maes |
|---|---|---|
| Hard | 1 | 0 |
All meetings (1)
| Date | Tour | Tournament | Round | Surface | Winner | Set 1 | Set 2 | Set 3 | Set 4 | Set 5 |
|---|---|---|---|---|---|---|---|---|---|---|
| 2007-04-21 | WTA | Fed Cup WG R1: USA vs BEL | Round Robin | Hard | Serena Williams | 6-1 | 6-4 |
| Surface | Serena Williams | Caroline Maes |
|---|---|---|
| Hard | 1 | 0 |
| Date | Tour | Tournament | Round | Surface | Winner | Set 1 | Set 2 | Set 3 | Set 4 | Set 5 |
|---|---|---|---|---|---|---|---|---|---|---|
| 2007-04-21 | WTA | Fed Cup WG R1: USA vs BEL | Round Robin | Hard | Serena Williams | 6-1 | 6-4 |