Juan Martin del Potro defeated Gilles Muller 7-6 7-6 in the Vienna semi-final on hard. The result followed the form book — Juan Martin del Potro came in leading the head-to-head 1–0, defending last year's final. Juan Martin del Potro extended the head-to-head to 2–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2009-01-19 | Australian Open | R32 | hard | Juan Martin del Potro | 6-7(5) 7-5 6-3 7-5 |
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 200). ATP, WTA & Challenger.
Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About