

Federico Coria defeated Jan Choinski 5-7 7-6 6-3 in the Buenos Aires CH quarter-final on clay. The upset overturned the form book — Jan Choinski came in ranked #77.
No previous meetings on record.
Averages over each player's completed matches in the selected window (184 vs 200). ATP, WTA & Challenger.
Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About
Coria F.: 21 days rest · Choinski J.: 5 days rest · 1 match, 39 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