Guillermo Gomez Diaz defeated Sekou Bangoura 6-4 6-2 in the USA F28 round of 16 on clay. The upset overturned the form book — Sekou Bangoura came in leading the head-to-head 1–0. Guillermo Gomez Diaz claimed a first win over Sekou Bangoura in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2011-06-13 | USA F14 | R32 | hard | Sekou Bangoura | 7-6(5) 7-5 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.