Michael Lammer defeated Marco Chiudinelli 3-6 7-6 6-0 in the Basel qualifying round on hard. The upset overturned the form book — Marco Chiudinelli came in leading the head-to-head 3–2, defending last year's round of 32. Michael Lammer narrowed the head-to-head to 3–3.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2009-11-02 | Basel | R16 | hard | Marco Chiudinelli | 2-6 6-3 6-3 |
| 2000-08-28 | Switzerland Satellite 1 | SF | clay | Marco Chiudinelli | 6-2 6-2 |
| 2000-08-28 | Switzerland Satellite 2 | F | clay | Michael Lammer | 6-7(5) 7-6(3) 6-0 |
| 2000-01-22 | Switzerland 1 Masters 1 | R32 | carpet | Michael Lammer | 6-3 1-6 6-0 |
| 1999-10-16 | Switzerland 2 Masters 3 | QF | carpet | Marco Chiudinelli | 4-6 6-1 6-4 |
Averages over each player's completed matches in the selected window (12 vs 181). ATP, WTA & Challenger.
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About