Tennys Sandgren defeated Greg Ouellette 6-0 6-3 in the USA F7 round of 32 on hard. The upset overturned the form book — Greg Ouellette came in leading the head-to-head 3–0. Tennys Sandgren claimed a first win over Greg Ouellette in four meetings, narrowing the head-to-head to 3–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2012-03-19 | USA F8 | QF | hard | Greg Ouellette | 7-5 6-1 |
| 2009-07-13 | USA F17 | R16 | clay | Greg Ouellette | 6-3 7-5 |
| 2008-06-23 | USA F15 | R16 | clay | Greg Ouellette | 3-6 6-3 6-4 |
Averages over each player's completed matches in the selected window (200 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