Osorio broke for 2-1 and again for 6-3, clinical in the finish, with Townsend's sole resistance a deuce hold for 1-0 saving both break points.
Townsend broke for 4-3 and again for 6-3, sealing the set after Osorio saved one of two break points in that final break.
Townsend broke for 2-0 and again for 4-2, dominant throughout, with Osorio's only hold for 3-5 a deuce game saving the sole break point.