Nicolas Massu defeated Jan Michael Gambill 7-6 6-2 6-3 in the US Open round of 128 on hard. The upset overturned the form book — Jan Michael Gambill came in leading the head-to-head 2–0, defending last year's round of 64. Nicolas Massu claimed a first win over Jan Michael Gambill in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2002-06-24 | Wimbledon | R128 | grass | Jan Michael Gambill | 6-3 7-6(9) 6-3 |
| 2001-01-08 | Auckland | R32 | hard | Jan Michael Gambill | 7-6(4) 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 (181 vs 18). ATP, WTA & Challenger.