Claire Peterzan defeated Karen Paterson 6-1 4-6 6-3 in the Hampstead London 10K qualifying round on hard. The upset overturned the form book — Karen Paterson came in leading the head-to-head 1–0. Claire Peterzan claimed a first win over Karen Paterson in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2006-09-18 | Nottingham 10K | QF | hard | Karen Paterson | 6-7(8) 6-4 6-2 |