Ko Suzuki defeated Yusuke Watanuki 6-3 6-4 in the Japan F8 round of 32 on clay. The upset overturned the form book — Yusuke Watanuki came in leading the head-to-head 2–0. Ko Suzuki claimed a first win over Yusuke Watanuki in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2015-06-15 | Japan F7 | R32 | carpet | Yusuke Watanuki | 6-0 6-2 |
| 2014-08-11 | Korea F10 | R32 | hard | Yusuke Watanuki | 6-2 6-4 |
Averages over each player's completed matches in the selected window (82 vs 47). 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