Na Li defeated Petra Cetkovska 6-3 6-4 in the Monterrey round of 16 on hard. The upset overturned the form book — Petra Cetkovska came in leading the head-to-head 2–0. Na Li claimed a first win over Petra Cetkovska in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2014-02-10 | Doha | R16 | hard | Petra Cetkovska | 7-6(2) 2-6 6-4 |
| 2011-08-22 | New Haven | SF | hard | Petra Cetkovska | 6-2 5-7 7-6(9) |
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 115). ATP, WTA & Challenger.
Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About