Kayla Day vs Sijia Wei Head-to-Head Stats, Results & Performance Comparison

Wojtek Kolan

Our Predictions

H2H Records Career Stats

HEAD TO HEAD
K. Day vs S. Wei

Kayla Day

USA

0

Win

Played

0

Win

Age

1.73m

Height

342

C. Rank

183

Best Rank

114

Total Title

YTD Titles

$561.1K

Career Money

$319.7K

Left-handed (Two-handed backhand)

Plays

Sijia Wei

CHN

0

Win

Played

0

Win

Age

1.73m

Height

342

C. Rank

183

Best Rank

114

Total Title

YTD Titles

$561.1K

Career Money

$319.7K

Left-handed (Two-handed backhand)

Plays

Head-to-head: Day 0 - 0 Wei

Players	Head To Head Match Wins
Day	0
Wei	0

Last H2H Matches:

no past h2h happened.

K. Day vs S. Wei H2H Profile

K. Day	Stats	S. Wei
$561,063	Career Prize Money	$319,660
56.51% (256-197)	Career Total W/L	64.81% (186-101)
7	Titles	10
0% (0-0)	YTD Win/Loss	0.00% (0-4)

K. Day vs S. Wei Match Preview:

Second serve performance recent form: In recent form (last 6 months), Kayla Day has won 38.90% of points on their second serve, while Sijia Wei has won 41.63%. There is a high correlation between this stat and match prediction accuracy.
Return game stats recent form: Return stats show Kayla Day, in recent form, has won 50.17% of their opponent's second serve points, while Sijia Wei has won 47.01%. The same stats for first serve returns are 31.79% and 36.50% respectively and this has a high correlation to pick who is favored in this H2H matchup.
Under pressure analysis: Kayla Day has saved 41.75% of breakpoints in recent form, whereas Sijia Wei has saved 48.95% which is a useful statistic for in-game betting predictions.
Performance overview: Over the last year Kayla Day has won 65.00% of matches played (W/L 26/14), with Sijia Wei winning 46.94% (W/L 23/26) that gives us an overall head-to head prediction overview.
Best surface: Kayla Day has their best career surface win % on Clay, winning 60% (W/L 87/59), and worse career win % on Grass, winning 27% (W/L 3/8). Sijia Wei has their best career surface win % on I.hard, winning 60% (W/L 10/4), and worse career win % on Grass, winning 33% (W/L 3/6).
Player level: In the last year, Kayla Day has played most of their matches on the Challengers/ITF tournaments > $10K, winning 66.67% of matches (W/L 22/11), where as Sijia Wei has played most of their matches on the Challengers/ITF tournaments > $10K, winning 45.83% of matches (W/L 11/13). When comparing stats between players to predict the favorite, it is of course all relative to the event level they have been playing at.
Opponent quality stats: Over the last 12 months, Kayla Day has played against opponents with an average rank of 313.45 while Sijia Wei has played against players with an average rank of 204.69.
Deciding set performance vs all players: If you are interested in live predictions and betting, if this match goes into a deciding set, Kayla Day has won 50% of deciding sets over the last 12 months, while Sijia Wei has won 44% in all matches played on tour.
Break point conversion: In recent form, Kayla Day has converted 40.76% of breakpoint opportunities, and Sijia Wei has converted 42.86% of their chances to break their opponents serve. A telling stat for in-game live betting tips when either player has a breakpoint opportunity.

Kayla Day vs Sijia Wei Editorial Preview By TennisTipster88.

Recent Performance Stats

K. Day Recent Matches Played

OPPONENT	RESULT	SCORE	H2H
W35 San Rafael - 29-09-2025
R2 Madison BrengleM. Brengle	L	6-1 6-7(5) 6-2	Stats
R1 Ekaterina KhayrutdinovaE. Khayrutdinova	W	7-6(2) 2-6 6-1	Stats
W75 Templeton - 22-09-2025
F Kayla CrossK. Cross	W	6-2 3-0 ret.	Stats
SF Olivia GadeckiO. Gadecki	W	6-4 6-2	Stats
QF Katrina ScottK. Scott	W	7-5 6-2	Stats

View All

S. Wei Recent Matches Played

OPPONENT	RESULT	SCORE	H2H
China Open - Beijing - 22-09-2025
R1 Zeynep SonmezZ. Sonmez	L	6-2 6-0	Stats
Huzhou Open - Huzhou - 08-09-2025
R2 Kyoka OkamuraK. Okamura	L	3-6 7-5 4-2 ret.	Stats
R1 Carol ZhaoC. Zhao	W	6-3 6-3	Stats
WTA Changsha Open - Changsha - 01-09-2025
R1 Zhibek KulambayevaZ. Kulambayeva	L	7-5 3-6 6-3	Stats
U.S. Open - New York - 25-08-2025
Q3 Shuai ZhangS. Zhang	L	6-1 6-3	Stats

View All

K. Day vs S. Wei Stats Breakdown Vs All H2H Opponents

K. Day	Stats	S. Wei
0% (0/0)	YTD Win/Loss	64.81% (186/101)
0% (0/0)	Sets Win/Loss	62.66% (396/236)
0% (0/0)	Games Win/Loss	55.99% (3199/2515)
0% (0/0)	Hard Win/Loss	67.90% (165/78)
0% (0/0)	Clay Win/Loss	38.10% (8/13)
0% (0/0)	Indoor Hard W/L	71.43% (10/4)
0% (0/0)	Grass Win/Loss	33.33% (3/6)
0	Aces Per Game	0.19
0	Aces Total	538
0	Double Faults Per Game	0.32
0	Total Double Faults	900
1st Match	Average Match Time	1:20:52
0	Average Opponent Rank	415.3
0% (0/0)	1st Serve %	57% (9365/16296)
0% (0/0)	1st Serve Win %	65% (6047/9365)
0% (0/0)	2nd Serve Win %	48% (3312/6931)
0% (0/0)	Break Points Won % (Total)	50% (1099/2187)
0% (0/0)	Return Points Win %	48% (7871/16383)
0% (0/0)	Slam W/L	52.94% (9/8)
0% (0/0)	Masters W/L	16.67% (1/5)
0% (0/0)	Cups W/L	50.00% (1/1)
0% (0/0)	Main Tour W/L	47.37% (9/10)
0% (0/0)	Challenger W/L	63.58% (96/55)
0% (0/0)	Futures W/L	76.09% (70/22)
0% (0/0)	Best of 3 Sets Win %	66% (183/278)
0% (0/0)	Best of 5 Sets Win %	0% (0/1)
0% (0/0)	Tiebreaks Win % (Total)	53% (23/43)
0% (0/0)	Deciding Set Win %	60% (39/65)
0% (0/0)	1st Set Won, Won Match	92% (179/165)
0% (0/0)	1st Set Won, Lost Match	8% (179/14)
0% (0/0)	1st Set Lost, Won Match	19% (108/20)