By surface
| Surface | Nicolas Kiefer | Sjeng Schalken |
|---|---|---|
| Hard | 4 | 0 |
All meetings (4)
| Date | Tour | Tournament | Round | Surface | Winner | Set 1 | Set 2 | Set 3 | Set 4 | Set 5 |
|---|---|---|---|---|---|---|---|---|---|---|
| 2005-01-03 | ATP | Adelaide | Round of 32 | Hard | Nicolas Kiefer | 6-2 | 4-6 | 6-3 | ||
| 2003-07-28 | ATP | Los Angeles | Round of 16 | Hard | Nicolas Kiefer | 6-4 | 6-4 | |||
| 2000-08-28 | ATP | US Open | Round of 32 | Hard | Nicolas Kiefer | 7-5 | 6-3 | 6-4 | ||
| 2000-01-03 | ATP | Doha | Quarterfinal | Hard | Nicolas Kiefer | 6-1 | 6-0 |