Renata Zarazua defeated Katerina Siniakova 6-2 4-6 6-4 in the San Diego qualifying round 1 on hard. The upset overturned the form book — Katerina Siniakova came in ranked #39.
No previous meetings on record.
Averages over each player's completed matches in the selected window (200 vs 193). ATP, WTA & Challenger.
Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About
Zarazua R.: 5 days rest · 1 match, 24 games (7d) · Siniakova K.: 12 days rest · 2 matches (14d). 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 hard field, opponent-adjusted over 52 weeks). About