Arnaud Clement defeated Nicolas Kiefer 4-6 6-4 6-4 6-2 in the US Open round of 32 on hard. The upset overturned the form book — Nicolas Kiefer came in leading the head-to-head 5–1, defending last year's round of 32. Arnaud Clement narrowed the head-to-head to 5–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2005-10-31 | Paris Masters | R64 | hard | Arnaud Clement | 6-4 1-6 7-6(6) |
| 2005-08-29 | US Open | R32 | hard | Nicolas Kiefer | 6-4 6-7(5) 6-4 6-1 |
| 2005-05-23 | Roland Garros | R64 | clay | Nicolas Kiefer | 4-6 6-2 6-2 4-6 6-4 |
| 2003-06-09 | Halle | SF | grass | Nicolas Kiefer | 4-6 7-6(4) 6-4 |
| 2001-06-11 | Halle | R32 | grass | Nicolas Kiefer | 6-3 6-4 |
| 1999-03-15 | Miami Masters | R64 | hard | Nicolas Kiefer | 6-1 6-2 |
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About
Averages over each player's completed matches in the selected window (200 vs 200). ATP, WTA & Challenger.
Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About