

Ignacio Buse defeated Joao Fonseca 5-7 6-3 6-4 in the Rio de Janeiro round of 16 on clay. The upset overturned the form book — Joao Fonseca came in ranked #26, defending last year's round of 32.
No previous meetings on record.
Averages over each player's completed matches in the selected window (31 vs 25). ATP, WTA & Challenger.
Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About
Buse I.: 1 day rest · 1 match, 19 games (7d) · Fonseca J.: 1 day rest · 1 match, 23 games (7d). Higher means fresher. About
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 clay field, opponent-adjusted over 52 weeks). About