Jun Kato defeated Martin Vacek 7-6 7-6 in the Switzerland 2 1 round of 16 on clay. The result followed the form book — Jun Kato came in leading the head-to-head 1–0. Jun Kato extended the head-to-head to 2–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2004-08-23 | Switzerland 2 4 | R32 | clay | Jun Kato | 6-7(4) 6-1 6-2 |