Nicolas Santos defeated Oscar Jose Gutierrez 6-3 5-7 7-6 in the Colombia F4 round of 16 on hard. The upset overturned the form book — Oscar Jose Gutierrez came in leading the head-to-head 3–0. Nicolas Santos claimed a first win over Oscar Jose Gutierrez in four meetings, narrowing the head-to-head to 3–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2018-05-07 | Brazil F3 | SF | clay | Oscar Jose Gutierrez | 4-6 6-3 6-4 |
| 2017-06-05 | Argentina F1 | R16 | clay | Oscar Jose Gutierrez | 6-2 2-6 7-5 |
| 2016-07-04 | Brazil F2 | QF | clay | Oscar Jose Gutierrez | 6-4 6-3 |
Averages over each player's completed matches in the selected window (12 vs 120). ATP, WTA & Challenger.
Gutierrez O.: 11 days rest · 1 match (14d). Higher means fresher. About
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About