Paul Henri Mathieu defeated Kenneth Carlsen 6-3 7-5 in the Chennai round of 16 on hard. The upset overturned the form book — Kenneth Carlsen came in leading the head-to-head 1–0, defending last year's round of 16. Paul Henri Mathieu claimed a first win over Kenneth Carlsen in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2004-01-05 | Chennai | R32 | hard | Kenneth Carlsen | 6-2 1-0 RET |
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 73). ATP, WTA & Challenger.