Nicolas Kiefer defeated Jan Michael Gambill 6-3 6-4 in the Memphis quarter-final on hard. The upset overturned the form book — Jan Michael Gambill came in leading the head-to-head 4–1, defending last year's round of 16. Nicolas Kiefer narrowed the head-to-head to 4–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2003-03-03 | Delray Beach | R32 | hard | Jan Michael Gambill | 6-2 6-4 |
| 2002-07-22 | Los Angeles | QF | hard | Jan Michael Gambill | 7-5 7-6(5) |
| 2000-08-14 | Washington | QF | hard | Nicolas Kiefer | 4-6 6-4 6-2 |
| 2000-05-29 | Roland Garros | R128 | clay | Jan Michael Gambill | 6-3 7-5 6-1 |
| 1998-03-02 | Scottsdale | R16 | hard | Jan Michael Gambill | 6-2 6-1 |
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 61). ATP, WTA & Challenger.