Lucas Arnold Ker defeated Carlos Engel 7-5 7-6 in the Chile Masters 4 qualifying round on clay. The upset overturned the form book — Carlos Engel came in leading the head-to-head 2–0. Lucas Arnold Ker claimed a first win over Carlos Engel in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1992-10-05 | Chile Masters 3 | SF | clay | Carlos Engel | 6-3 1-6 7-6 |
| 1991-09-02 | Brazil 6 Masters 4 | R16 | clay | Carlos Engel | 6-1 3-6 6-3 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.