Colin Ebelthite defeated Miles Armstrong 6-1 6-2 in the Australia F10 round of 16 on hard. The upset overturned the form book — Miles Armstrong came in leading the head-to-head 3–1. Colin Ebelthite narrowed the head-to-head to 3–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2008-03-10 | Australia F3 | SF | hard | Colin Ebelthite | 6-4 6-2 |
| 2007-10-22 | Australia F8 | QF | hard | Miles Armstrong | 6-2 6-4 |
| 2007-10-08 | Australia F7 | SF | clay | Miles Armstrong | 6-1 6-2 |
| 2006-09-25 | Australia F9 | R32 | hard | Miles Armstrong | 3-6 7-6(8) 6-4 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.