
Guy Den Ouden faces Alexandre Muller in the Hagen round of 32 on clay. Alexandre Muller is the paper favourite — ranked #132, a roughly 140-point clay Elo advantage — but Guy Den Ouden arrives in form, winning 7 of their last 9 on clay to Alexandre Muller's 2.
Toss-up · Too close to call
Calibrated model · 63% favourite accuracy (2025–26, out-of-sample). Probability is a statistical estimate, not a certainty. How it works.
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.
Averages over each player's completed matches in the selected window (13 vs 21). ATP, WTA & Challenger.
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About
Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About
Den Ouden G.: 4 days rest · 1 match, 18 games (7d) · Muller A.: 1 day rest · 3 matches, 86 games (7d). Higher means fresher. About
No previous meetings on record.
Per-surface Serve / Return Rating (0–100, percentile within the clay field, opponent-adjusted over 52 weeks). About