Sam Groth defeated Miles Armstrong 6-4 6-3 in the Australia F12 round of 16 on grass. The upset overturned the form book — Miles Armstrong came in leading the head-to-head 2–0. Sam Groth claimed a first win over Miles Armstrong in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2007-10-29 | Australia F9 | R16 | hard | Miles Armstrong | 6-4 7-6(3) |
| 2007-10-08 | Australia F7 | F | clay | Miles Armstrong | 6-7(6) 6-1 6-3 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.