Natalia Siedliska defeated Mayuka Aikawa 6-4 6-2 in the W15 Cancun 1 round of 16 on hard. The upset overturned the form book — Mayuka Aikawa came in leading the head-to-head 1–0, but Natalia Siedliska had been the form player, winning 3 of their last 4 on hard. Natalia Siedliska claimed a first win over Mayuka Aikawa in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2021-05-19 | W15 Antalya 20 | R32 | clay | Mayuka Aikawa | 2-3 |
Averages over each player's completed matches in the selected window (2 vs 49). 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. Small sample — read as indicative. About