Konstantin Don Gruber defeated Doug Root 6-3 6-3 in the Mexico 1 2 round of 32 on clay. The upset overturned the form book — Doug Root came in leading the head-to-head 1–0. Konstantin Don Gruber claimed a first win over Doug Root in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2001-03-12 | Mexico 1 1 | R16 | clay | Doug Root | 6-4 3-6 6-3 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.