Daniel Yoo defeated Tigran Martirosyan 6-3 6-3 in the USA F21 semi-final on hard. The result followed the form book — Daniel Yoo came in leading the head-to-head 1–0. Daniel Yoo extended the head-to-head to 2–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2008-11-03 | USA F28 | F | hard | Daniel Yoo | 7-5 6-4 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.