Flavia Pennetta defeated Agnieszka Radwanska 7-6 6-4 in the WTA Finals round robin on hard. The upset overturned the form book — Agnieszka Radwanska came in leading the head-to-head 4–3, defending last year's semi-final. Flavia Pennetta narrowed the head-to-head to 4–4.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2015-02-23 | Doha | R16 | hard | Agnieszka Radwanska | 6-1 6-1 |
| 2014-03-03 | Indian Wells | F | hard | Flavia Pennetta | 6-2 6-1 |
| 2014-02-17 | Dubai | R16 | hard | Flavia Pennetta | 6-4 6-1 |
| 2012-03-05 | Indian Wells | R32 | hard | Agnieszka Radwanska | 6-4 6-2 |
| 2011-10-03 | Beijing | SF | hard | Agnieszka Radwanska | 6-2 6-4 |
| 2010-02-15 | Dubai | R16 | hard | Agnieszka Radwanska | 6-3 6-0 |
| 2008-01-07 | Hobart | R32 | hard | Flavia Pennetta | 6-4 1-6 6-2 |
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 (32 vs 190). ATP, WTA & Challenger.
Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About