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Dayeon Back tennis player profile visual with TennisJack stats and match analysis
TJPlayer research cockpit

Dayeon Back

TennisJack analysis

Dayeon Back currently has a large TennisJack sample of 75 completed matches, with a 72.0% win rate in the loaded match history. The recent form line is 9-1 across the latest 10 completed matches.

Latest rank #260
M
Matches75Completed matches
%
Win rate72.0%Across all matches
F
Latest form9-1In latest 10 matches
Performance metrics
Hold Base66.6%
Break Pressure51.1%
Latest form (10 matches)
9-1
W Oldest W 2 W 3 W 4 W 5 W 6 W 7 W 8 L 9 W Latest
Surface profile
Hardcourt outdoor 60 matches · 73.3% WR
South Korea flag
CountrySouth KoreaCountry profile
PlayRightRight-handed
Highest Rank#264Singles career high
Age / Birthday24Born 24 Jan 2002
Profile intelligence

Ten signals worth watching.

Built from 75 completed TennisJack matches: form, surface, odds, pressure and close-set behavior. The full match log stays below for audit.

01

Player DNA

Quick fingerprint from starts, service base, return bite and decider exposure.

Strong starter Break-heavy player
Set 1 punch70.7%
Service shield66.6%
Return bite51.1%
Decider risk22.7%
02

Favorite / Underdog Split

How the player behaves when priced as market favorite versus outsider.

Favorite 80.4% 45-11 - 56 matches Avg odds 1.31 | 1+ set 92.9%
Underdog 25.0% 3-9 - 12 matches Avg odds 3.01 | 1+ set 33.3%
03

First Set Personality

Shows whether the player starts cleanly, breaks first, or survives early pressure.

Set 1 win70.7%
Breaks first S150.7%
Broken first S149.3%
Recovers S154.1%
04

Break Pressure Profile

Return damage versus service leakage, built from set-level break counters.

Avg breaks4.48
Avg broken3.17
Balance1.31
Clean service matches17.3%
3+ breaks produced78.7%
Set 2 win72.0%
05

Clean Win / Comeback Index

Separates smooth 2-0 wins from matches where the player had to repair damage.

42.6%Clean 2-0 share among wins
Clean 2-0 wins23
Comeback signals57
Lost set 1, won match6
Comeback index76.0%
06

Surface Edge

Where the profile is most trustworthy and where the win rate really travels.

Primary surfaceHardcourt outdoor
Primary record44-16
Primary WR73.3%
Best surfaceUnknown 100.0%
Hardcourt outdoor44-1673.3%
Hardcourt indoor5-362.5%
Synthetic outdoor4-266.7%
Unknown1-0100.0%
07

Odds Value Pulse

Shows whether the player wins as expected or creates value at outsider prices.

Avg win odds1.34
Avg loss odds2.26
Biggest win odds2.63
2.00+ odds WR30.0%
2.00+ sample10
Odds sample68
08

Decider Profile

How often matches become complicated, and whether the player survives the third set.

Three-set share22.7%
Decider record9-8
Set 3 win52.9%
After losing S127.3%
09

Close Set Risk

Tie-break and 7-5 / 7-6 pressure profile, useful for spotting fragile edges.

Close sets27-22
Close-set WR55.1%
Tie-breaks5-6
Matches with tight set39
10

Momentum Trend

Compares the latest 5 matches with the previous 10 so form shifts are visible immediately.

Cooling down · 1 wins running
W oldest W 2 W 3 W 4 W 5 W 6 W 7 W 8 L 9 W latest
Latest 5 4-1 80.0% WR
Trend delta -20.0% latest vs previous sample
Match log

All Dayeon Back matches in the TennisJack sample.

Scan date, tournament, surface, players, odds, final score, result and service-return indicators from completed matches.

Open Player Research
Win
21.06.2026
W35 TaipeiHardcourt outdoor
Dayeon Back
vs
Haruka Kaji
1.40
2.75
6-1 7-5
Hold
66.7%
Break
66.7%
Win
20.06.2026
W35 TaipeiHardcourt outdoor
Dayeon Back
vs
Hiromi Abe
1.53
2.38
6-1 6-4
Hold
77.8%
Break
62.5%
Win
19.06.2026
W35 TaipeiHardcourt outdoor
Dayeon Back
vs
Naho Sato
1.13
5.50
7-5 6-2
Hold
60.0%
Break
70.0%
Win
24.05.2026
W35 ChangwonHardcourt outdoor
Dayeon Back
vs
Ha Eum Lee
1.08
7.00
6-1 6-2
Hold
100.0%
Break
57.1%
Win
23.05.2026
W35 ChangwonHardcourt outdoor
Dayeon Back
vs
Jia-Jing Lu
1.25
3.75
6-2 6-2
Hold
75.0%
Break
75.0%
Win
22.05.2026
W35 ChangwonHardcourt outdoor
Dayeon Back
vs
Reina Goto
1.22
4.00
6-3 6-2
Hold
66.7%
Break
75.0%
Win
22.05.2026
W35 ChangwonHardcourt outdoor
Dayeon Back
vs
Eun Ji Lee
1.03
10.00
6-1 2-6 6-1
Hold
63.6%
Break
63.6%
Win
15.05.2026
W35 AndongHardcourt outdoor
Yuki Naito
vs
Dayeon Back
2.10
1.67
3-6 5-7
Hold
72.7%
Break
50.0%
Win
14.05.2026
W35 AndongHardcourt outdoor
Hee Rae Im
vs
Dayeon Back
9.00
1.04
0-6 0-6
Hold
100.0%
Break
100.0%
Win
13.05.2026
W35 AndongHardcourt outdoor
Amy Zhu
vs
Dayeon Back
8.00
1.06
2-6 1-6
Hold
87.5%
Break
71.4%
Loss
09.05.2026
W35 ChangwonHardcourt outdoor
Dayeon Back
vs
Hanna Chang
1.91
1.80
1-6 4-6
Hold
44.4%
Break
12.5%
Win
08.05.2026
W35 ChangwonHardcourt outdoor
Dayeon Back
vs
Yuki Naito
1.62
2.20
5-7 6-4 6-4
Hold
56.2%
Break
50.0%
Win
07.05.2026
W35 ChangwonHardcourt outdoor
Dayeon Back
vs
Ha Eum Lee
1.07
7.50
6-4 6-3
Hold
66.7%
Break
60.0%
Loss
02.05.2026
W35 GoyangHardcourt outdoor
Sohyun Park
vs
Dayeon Back
2.00
1.73
7-6 6-4
Hold
63.6%
Break
25.0%
Win
25.04.2026
W15 SingaporeHardcourt indoor
Dayeon Back
vs
Yingqun Sun
1.17
4.50
6-2 6-2
Hold
100.0%
Break
50.0%
Win
24.04.2026
W15 SingaporeHardcourt indoor
Dayeon Back
vs
Yujin Kim
1.17
4.50
6-2 6-2
Hold
87.5%
Break
62.5%
Win
22.04.2026
W15 SingaporeHardcourt indoor
Dayeon Back
vs
Cherry Kim
1.13
5.50
4-6 6-3 6-2
Hold
78.6%
Break
38.5%
Win
18.03.2026
W35 MaanshanHardcourt indoor
Yuhan Wang
vs
Dayeon Back
2.63
1.44
5-7 1-6
Hold
66.7%
Break
70.0%
Loss
25.11.2025
ITF W75 PlayfordHardcourt outdoor
Dayeon Back
vs
Sijia Wei
2.38
1.53
4-6 0-5
Hold
25.0%
Break
25.0%
Loss
20.11.2025
ITF W75 SydneyHardcourt outdoor
Talia Gibson
vs
Dayeon Back
1.25
3.75
6-3 6-2
Hold
33.3%
Break
25.0%
Win
18.11.2025
ITF W75 SydneyHardcourt outdoor
Laquisa Khan
vs
Dayeon Back
7.50
1.07
4-6 2-6
Hold
77.8%
Break
55.6%
Loss
04.11.2025
ITF W35 HamamatsuSynthetic outdoor
Kisa Yoshioka
vs
Dayeon Back
10.00
1.03
3-6 6-4 7-5
Hold
62.5%
Break
33.3%
Loss
02.11.2025
ITF W35 MakinoharaSynthetic outdoor
Sara Saito
vs
Dayeon Back
1.44
2.63
6-1 6-2
Hold
12.5%
Break
28.6%
Win
01.11.2025
ITF W35 MakinoharaSynthetic outdoor
Dayeon Back
vs
Ayano Shimizu
1.30
3.40
7-6 1-6 7-6
Hold
53.3%
Break
27.8%
Win
31.10.2025
ITF W35 MakinoharaSynthetic outdoor
Dayeon Back
vs
Eunhye Lee
1.36
3.00
6-3 6-4
Hold
50.0%
Break
77.8%
Win
30.10.2025
ITF W35 MakinoharaSynthetic outdoor
Dayeon Back
vs
Rinko Matsuda
1.10
6.50
6-3 6-1
Hold
75.0%
Break
75.0%
Win
28.10.2025
ITF W35 MakinoharaSynthetic outdoor
Dayeon Back
vs
Meng Yi Chen
1.06
8.00
6-2 6-0
Hold
100.0%
Break
71.4%
Win
09.10.2025
ITF W35 KunshanHardcourt outdoor
Dayeon Back
vs
Eunhye Lee
1.67
2.10
7-5 6-1
Hold
90.0%
Break
44.4%
Loss
23.09.2025
ITF W100 IncheonHardcourt outdoor
Dayeon Back
vs
Momoko Kobori
1.30
3.40
0-6 6-3 3-6
Hold
50.0%
Break
25.0%
Loss
04.09.2025
ITF W35 Nakhon PathomHardcourt outdoor
Miho Kuramochi
vs
Dayeon Back
3.00
1.36
6-7 6-3 7-6
Hold
56.2%
Break
31.6%
Loss
28.08.2025
ITF W35 Nakhon PathomHardcourt outdoor
Fangran Tian
vs
Dayeon Back
1.73
2.00
6-0 6-1
Hold
14.3%
Break
0.0%
Win
27.08.2025
ITF W35 Nakhon PathomHardcourt outdoor
Elina Nepliy
vs
Dayeon Back
7.50
1.07
2-6 2-5
Hold
75.0%
Break
75.0%
Win
26.07.2025
ITF W35 MonastirHardcourt outdoor
Dayeon Back
vs
Yeon Woo Ku
2.20
1.62
0-6 6-3 6-3
Hold
66.7%
Break
33.3%
Win
31.05.2025
ITF W15 DaeguHardcourt outdoor
Dayeon Back
vs
Gaeul Jang
1.13
5.50
6-2 6-4
Hold
77.8%
Break
55.6%
Win
21.05.2025
ITF W35 AndongHardcourt outdoor
Dayeon Back
vs
Sunam Jeong
1.30
3.40
6-3 6-1
Hold
87.5%
Break
62.5%
Win
15.05.2025
ITF W35 ChangwonHardcourt outdoor
Dayeon Back
vs
Ya-Hsuan Lee
1.40
2.75
7-5 6-2
Hold
60.0%
Break
70.0%