Christopher Koderisch defeated Jun Kato 6-3 6-2 in the Switzerland 2 2 round of 16 on clay. The upset overturned the form book — Jun Kato came in leading the head-to-head 1–0. Christopher Koderisch claimed a first win over Jun Kato in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2005-08-29 | Switzerland 2 4 | R32 | clay | Jun Kato | 3-6 6-3 6-3 |