Erling Tveit defeated Karlis Lejnieks 6-3 3-6 6-3 in the USA F12 semi-final on clay. The upset overturned the form book — Karlis Lejnieks came in leading the head-to-head 2–0. Erling Tveit claimed a first win over Karlis Lejnieks in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2010-05-03 | USA F11 | R16 | clay | Karlis Lejnieks | 6-3 7-6(4) |
| 2010-04-26 | USA F10 | QF | clay | Karlis Lejnieks | 6-3 3-6 6-2 |