Kayla Day vs Alyssa Ahn — W15 San Diego Semi-final

W15 San Diego · CHALLENGER · Semi-final
USA
Kayla Day
#137WTA
1595ELO
1576Hard ELO
26 yrs · 173 cm · Left-handed
Last 10 · pre-match
LWWWLLWLWL
0 — 0
Sets
Monday, 7 July 2025
hard
USA
Alyssa Ahn
#900WTA
19 yrs
Last 10 · pre-match
LLWWWWLWLW
Day K.
6-3 6-3
Ahn A.
Day K.
662
Ahn A.
33–

Kayla Day defeated Alyssa Ahn 6-3 6-3 in the W15 San Diego semi-final on hard. The result followed the form book — Kayla Day came in ranked #137.

Key context

Head to head

No previous meetings on record.

Serve vs return

This season
Day K.serving53% hold

wins 51% of points on serve vs Ahn A.

Ahn A.serving48% hold

wins 49% of points on serve vs Day K.

Baseline battle — serve is shaky, expect plenty of breaks

Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About

Statistics

This season
Day K.Ahn A.
1st serve in·Even
64%
64%
1st serve points won·Slight edge
67%
60%
2nd serve points won·Even
46%
49%
Service points won·Even
59%
56%
Return points won·Even
47%
48%
Break points saved·Even
56%
53%
Aces / match·Clear edge
3.3
0.7
Double faults / match·Dominant
2.7
0.9

Averages over each player's completed matches in the selected window (76 vs 23). ATP, WTA & Challenger.

Umpiry Score

Pre-match
Day K.
5.8
Slight disadvantageUmpiry ScorePartial · surface data limited
Ahn A.
6.5
Marginal edgeUmpiry ScorePartial · surface data limited
Form & Matchup
5.0No prior meetings
H2H
5.0
5.3
Surface form
6.6
0.0Lost last 3
Win streak
Fatigue & Travel
7.0
3-set count
7.0
7.0
Surface transition
Context
5.0
Defending pts
5.0

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.

Freshness

Recent load
Day K.Ahn A.
Freshness·
94
—

Day K.: 10 days rest · 1 match (14d). Higher means fresher. About

Conditions

Court speed
Medium-slowfavours grinders
SlowFast

Draw

Final
Wang T.
Day K.
6-46-3
Semi-finals
Wang T.
Mcneil C.
6-42-66-2
Day K.
Ahn A.
6-36-3
Quarter-finals
Day K.
Castillo Meza M.
6-26-2
Mcneil C.
Markham A.
6-31-66-3
Ahn A.
Paskauskas K.
6-746-26-1
R16
Castillo Meza M.
Collins K.
6-36-2
Ahn A.
Clemens J.
6-36-0
Markham A.
Marton I.
6-36-3
Paskauskas K.
Rachapudi P.
7-56-1
Sahdiieva A.
Cadar E.
6-24-1
Mcneil C.
Fernandez B.
6-36-1
Wang T.
Chan J.
7-676-0
Day K.
Mahendran K.
6-06-1
R32
Mcneil C.
Usui K.
3-66-26-4
Paskauskas K.
Kiss C.
4-66-37-63
Ahn A.
Deming E.
6-13-67-64
Day K.
Keller K.
6-36-3
Castillo Meza M.
Daughters P.
6-46-2
Collins K.
Arun Kumar M.
6-36-2
Clemens J.
Tirunelveli T.
7-56-4
Mahendran K.
Allegre C.
7-56-3
Wang T.
Hammond Z.
6-36-4
Marton I.
Kay S.
3-66-36-2
Cadar E.
Adair M.
6-06-0
Rachapudi P.
Dunyon J.
6-14-66-1
Sahdiieva A.
Murphy M.
7-56-2
Markham A.
Katsumi N.
6-43-66-4
Fernandez B.
Suh S.
6-46-2
Chan J.
Payne B.
7-646-2