Jun Kato defeated Christopher Koderisch 3-6 6-3 6-3 in the Switzerland 2 4 round of 32 on clay. The upset overturned the form book — Christopher Koderisch came in leading the head-to-head 1–0. Jun Kato claimed a first win over Christopher Koderisch in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2005-08-29 | Switzerland 2 2 | R16 | clay | Christopher Koderisch | 6-3 6-2 |