Darian King defeated Matheson Klein 6-4 6-1 in the Mexico F8 round of 32 on hard. The upset overturned the form book — Matheson Klein came in leading the head-to-head 1–0, but Darian King had been the form player, winning 3 of their last 4 on hard. Darian King claimed a first win over Matheson Klein in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2013-01-21 | Mexico F1 | R32 | hard | Matheson Klein | 6-3 6-1 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.