Ling Zhang defeated Erika Sema 6-0 6-1 in the Wellington 10K round of 16 on hard. The upset overturned the form book — Erika Sema came in leading the head-to-head 3–1. Ling Zhang narrowed the head-to-head to 3–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2013-08-26 | Tsukuba 25K | R32 | hard | Erika Sema | 6-3 6-2 |
| 2008-05-12 | Kurume 50K | R16 | grass | Erika Sema | 6-3 1-6 6-3 |
| 2008-05-05 | Changwon 25K | R32 | hard | Ling Zhang | 6-1 6-4 |
| 2007-03-05 | Hamilton 10K | QF | hard | Erika Sema | 6-2 5-7 6-3 |
Averages over each player's completed matches in the selected window (56 vs 199). 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