Adrian Cruciat defeated Michael Linzer 7-5 6-7 7-6 in the Bulgaria F1 qualifying round on clay. The upset overturned the form book — Michael Linzer came in leading the head-to-head 3–0, but Adrian Cruciat had been the form player, winning 5 of their last 10 on clay. Adrian Cruciat claimed a first win over Michael Linzer in four meetings, narrowing the head-to-head to 3–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2011-02-07 | Turkey F4 | F | hard | Michael Linzer | 4-6 6-1 6-1 |
| 2010-11-01 | Turkey F14 | SF | clay | Michael Linzer | 7-6(6) 7-5 |
| 2010-07-26 | Romania F9 | R16 | clay | Michael Linzer | 6-3 3-6 6-0 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.