Jae Sik Kim defeated Toshitsugu Mori 6-4 6-4 in the China Masters 2 round of 16 on hard. The upset overturned the form book — Toshitsugu Mori came in leading the head-to-head 1–0. Jae Sik Kim claimed a first win over Toshitsugu Mori in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1991-11-04 | Japan Masters 2 | QF | hard | Toshitsugu Mori | 6-3 7-6 |