Nicolas Barrientos defeated Matheson Klein 6-3 4-6 6-3 in the Guatemala F1 qualifying round on hard. The result followed the form book — Nicolas Barrientos came in leading the head-to-head 2–0. Nicolas Barrientos extended the head-to-head to 3–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2013-01-28 | Mexico F2 | SF | hard | Nicolas Barrientos | 7-5 6-4 |
| 2012-09-24 | Colombia F3 | R32 | clay | Nicolas Barrientos | 4-6 7-6(3) 6-2 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.