Erika Sema defeated Ji Hee Choi 6-4 6-3 in the W25 Kashiwa q16 on hard. The upset overturned the form book — Ji Hee Choi came in leading the head-to-head 3–0, but Erika Sema had been the form player, winning 5 of their last 10 on hard. Erika Sema claimed a first win over Ji Hee Choi in four meetings, narrowing the head-to-head to 3–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2022-12-20 | W60 Kyoto | R32 | hard | Ji Hee Choi | 7-5 6-3 |
| 2022-03-29 | W60 Canberra | R32 | clay | Ji Hee Choi | 6-1 6-2 |
| 2019-03-24 | W25 Kofu | Q32 | hard | Ji Hee Choi | 6-3 6-0 |
Averages over each player's completed matches in the selected window (199 vs 73). 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