Yasufumi Yamamoto defeated Ryuso Tsujino 7-5 7-6 in the Australia 3 Masters 2 round of 32 on hard. The upset overturned the form book — Ryuso Tsujino came in leading the head-to-head 1–0. Yasufumi Yamamoto claimed a first win over Ryuso Tsujino 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 | Ryuso Tsujino | 6-2 6-4 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.