

Marcos Giron defeated Alex Michelsen 6-4 6-4 in the Auckland round of 16 on hard. The upset overturned the form book — Alex Michelsen came in ranked #46, defending last year's quarter-final. Marcos Giron extended the head-to-head to 3–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2024-10-21 | Vienna | R32 | hard | Marcos Giron | 7-6(4) 6-3 |
| 2024-07-15 | Newport | F | grass | Marcos Giron | 6-7(4) 6-3 7-5 |
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About
Per-surface Serve / Return Rating (0–100, percentile within the hard field, opponent-adjusted over 52 weeks). About
Averages over each player's completed matches in the selected window (25 vs 24). ATP, WTA & Challenger.
Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About
The Umpiry Score combines match-context factors — matchup, form, fatigue, travel and motivation — into a single 0–10 score, updated daily. Read how it works.
Giron M.: 10 days rest · 3 matches (14d) · Michelsen A.: 3 days rest · 4 matches, 78 games (7d). Higher means fresher. About