Olukayode Alafia Damina Ayeni vs Evan ZhuSan Diego 2 Qualifying Round of 16

San Diego 2 · CHALLENGER · Qualifying Round of 16
#453ATP
1324ELO
1310Hard ELO
27 yrs · 191 cm · Right-handed
Last 10 · pre-match
WLWLLWLLWL
0 — 2
Sets
Monday, 21 September 2026 ·
hard
#513ATP
$22kYTD
$184kCAREER
28 yrs · 185 cm · Right-handed
Last 10 · pre-match
WLWWLWWLWW
Alafia Damina Ayeni O.
2-6 4-6
Zhu E.
Alafia Damina Ayeni O.
240
Zhu E.
662

Evan Zhu defeated Olukayode Alafia Damina Ayeni 6-2, 6-4 in the San Diego 2 quarterfinals. Zhu hit 2 aces and 1 double fault, while Ayeni had 1 ace and 3 double faults. Zhu converted all 2 of his break points and won 2 service breaks to Ayeni's 0.

Generated automatically from Umpiry match data.

Momentum · Final
Alafia Damina Ayeni O.0/9
Zhu E.3/9

hold to 0/15to 30to 40 / deucebroken

Key context

Head to head

10
DateTournamentRoundSurfaceWinnerScore
2024-12-13M15 Huamantla 7QFhardOlukayode Alafia Damina Ayeni6-2 6-1

Statistics

This season
1st serve in·Even
61%
57%
1st serve points won·Slight edge
74%
68%
2nd serve points won·Slight edge
45%
55%
Service points won·Even
63%
63%
Return points won·Even
39%
37%
Break points saved·Slight edge
62%
57%
Aces / match·Dominant
7.9
3.6
Double faults / match·Dominant
6.4
3.8

Averages over each player's completed matches in the selected window (25 vs 10). ATP, WTA & Challenger.

Clutch

Under pressure
Clutch Rating·Even
13
10
Break points saved·Dominant
57
31
Break points won·Even
1
4
Deciding sets·Clear edge
38
60
Tiebreaks·Slight edge
20
9

Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About

Win Probability

Pre-match · updated 17:50 UTC
Alafia Damina Ayeni O.54%
Zhu E.46%
Toss-up
50–58%
Slight edge
58–67%
Clear favourite
67–80%
Strong favourite
80%+

Toss-up · Too close to call

Calibrated model · 63% favourite accuracy (2025–26, out-of-sample). Probability is a statistical estimate, not a certainty. How it works.

Umpiry Score

Pre-match
4.9
Heavy underdogUmpiry ScorePartial · surface data limited
  • Back-to-back day (−0.5)
5.2
Clear underdogUmpiry ScorePartial · surface data limited
  • Back-to-back day (−0.5)
Form & Matchup
7.0Leads 1–0 on hard
H2H
3.0Trails 0–1 on hard
4.95 of last 10 on hard
Surface form
6.97 of last 10 on hard
Fatigue & Travel
7.01 three-setter in 14 days
3-set count
4.02 three-setters in 14 days
5.1Won 51% in USA (35)
Country comfort
5.3Won 55% in USA (95)
Context
5.0Didn't play here last year
Defending pts
5.0Didn't play here last year

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
Freshness·Slight edge
75
65

Alafia Damina Ayeni O.: 1 day rest · 2 matches, 40 games (7d) · Zhu E.: 1 day rest · 3 matches, 66 games (7d). Higher means fresher. About

Conditions

Weather
27°CDrizzle
Wind 3 km/hHumidity 82%

Draw