Clinton Thomson defeated Chase Buchanan 4-6 6-1 6-2 in the USA F10 qualifying round on clay. The upset overturned the form book — Chase Buchanan came in leading the head-to-head 1–0. Clinton Thomson claimed a first win over Chase Buchanan in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2008-04-28 | USA F9 | R16 | clay | Chase Buchanan | 3-6 7-6(8) 6-2 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.