Karen Paterson defeated Claire Peterzan 6-7 6-4 6-2 in the Nottingham 10K qualifying round on hard. The upset overturned the form book — Claire Peterzan came in leading the head-to-head 1–0. Karen Paterson claimed a first win over Claire Peterzan in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2005-08-08 | Hampstead London 10K | QF | hard | Claire Peterzan | 6-1 4-6 6-3 |