Jan Krejci defeated Fredrik Giers 7-6 4-6 6-4 in the USA 4 Masters 1 round of 32 on hard. The upset overturned the form book — Fredrik Giers came in leading the head-to-head 1–0, but Jan Krejci had been the form player, winning 3 of their last 5 on hard. Jan Krejci claimed a first win over Fredrik Giers in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1999-11-29 | USA F21 | R32 | hard | Fredrik Giers | 6-2 6-0 |