Chase Buchanan defeated Carsten Ball 7-6 6-4 in the Canada F7 semi-final on clay. The upset overturned the form book — Carsten Ball came in leading the head-to-head 1–0. Chase Buchanan claimed a first win over Carsten Ball in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2007-10-22 | USA F27 | QF | hard | Carsten Ball | 6-2 6-3 |
Averages over each player's completed matches in the selected window (82 vs 1). ATP, WTA & Challenger.
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. Small sample — read as indicative. About