Nicolas Kiefer defeated Pete Sampras 6-3 6-4 in the Halle round of 16 on grass. The upset overturned the form book — Pete Sampras came in leading the head-to-head 3–0. Nicolas Kiefer claimed a first win over Pete Sampras in four meetings, narrowing the head-to-head to 3–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2001-03-19 | Miami Masters | R64 | hard | Pete Sampras | 6-3 3-6 6-3 |
| 1999-11-22 | Tour Finals | SF | hard | Pete Sampras | 6-3 6-3 |
| 1998-10-26 | Stuttgart Masters | R32 | carpet | Pete Sampras | 6-3 6-4 |
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 40). ATP, WTA & Challenger.