Timo Nieminen defeated Andrea Arnaboldi 6-2 6-3 in the Mexico F12 round of 16 on hard. The upset overturned the form book — Andrea Arnaboldi came in leading the head-to-head 1–0. Timo Nieminen claimed a first win over Andrea Arnaboldi in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2004-10-11 | Mexico F13 | R16 | hard | Andrea Arnaboldi | 7-6(5) 4-6 7-6(8) |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.