Federico Delbonis defeated John Millman 7-5 3-6 7-6 in the Miami Masters round of 64 on hard. The upset overturned the form book — John Millman came in defending last year's round of 64. Federico Delbonis extended the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2019-01-14 | Australian Open | R128 | hard | John Millman | 6-3 3-6 7-6(3) 6-2 |
| 2018-07-16 | Bastad | R16 | clay | Federico Delbonis | 6-4 6-4 |
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About
Averages over each player's completed matches in the selected window (200 vs 199). ATP, WTA & Challenger.
Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About