
Christopher Oconnell defeated Frances Tiafoe 7-5 7-6 in the Miami Masters round of 64 on hard. The upset overturned the form book — Frances Tiafoe came in defending last year's round of 32.
No previous meetings on record.
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 (127 vs 130). 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.
Tiafoe F.: 8 days rest · 3 matches (14d). Higher means fresher. About