John Millman defeated Illya Marchenko 5-7 7-6 6-3 in the Sofia round of 16 on hard. The result followed the form book — John Millman came in leading the head-to-head 2–1, defending last year's quarter-final. John Millman extended the head-to-head to 3–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2021-10-18 | Moscow | R16 | hard | John Millman | 6-1 5-7 6-4 |
| 2010-01-16 | Australian Open | Q32 | hard | Illya Marchenko | 6-2 6-1 |
| 2009-01-14 | Australian Open | Q128 | hard | John Millman | 4-6 6-0 6-4 |
Averages over each player's completed matches in the selected window (105 vs 200). ATP, WTA & Challenger.
Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About