Tennys Sandgren defeated Peter Polansky 6-4 6-3 in the Canada F9 final on hard. The upset overturned the form book — Peter Polansky came in leading the head-to-head 1–0. Tennys Sandgren claimed a first win over Peter Polansky in two meetings, levelling the head-to-head at 1–1.
Sandgren T. took it in straight sets.
Tennys Sandgren beat Peter Polansky 6-4 6-3. Umpiry, "Tennys Sandgren vs Peter Polansky — Canada F9 Final", https://umpiry.com/match/2012-09-17/polansky-vs-sandgren-canada-f9-f?utm_source=cite (as of 17 September 2012).