Juan Martin del Potro defeated Radek Stepanek 6-4 3-6 6-3 in the Sydney quarter-final on hard. The upset overturned the form book — Radek Stepanek came in leading the head-to-head 3–2, defending last year's round of 16. Juan Martin del Potro narrowed the head-to-head to 3–3.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2012-09-14 | Davis Cup WG SF: ARG vs CZE | RR | clay | Juan Martin del Potro | 6-4 6-4 6-2 |
| 2012-08-06 | Canada Masters | R32 | hard | Radek Stepanek | 6-4 7-6(5) |
| 2011-03-10 | Indian Wells Masters | R128 | hard | Juan Martin del Potro | 6-4 6-0 |
| 2009-11-08 | Paris Masters | QF | hard | Radek Stepanek | 4-0 RET |
| 2009-02-16 | Memphis | QF | hard | Radek Stepanek | 7-6(7) 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 (184 vs 111). ATP, WTA & Challenger.
Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About