Johannes Ager defeated Marc Sieber 6-1 7-6 in the Austria F8 round of 16 on clay. Johannes Ager extended the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2009-01-26 | Austria F2 | QF | carpet | Marc Sieber | 6-7(4) 7-5 7-6(6) |
| 2008-07-07 | Austria F6 | SF | clay | Johannes Ager | 7-6(2) 3-6 6-1 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.