Prediction of Dayeon Back vs Ji Yun Yun Head-to-Head, At

Wojtek Kolan

Our Predictions

H2H Records Career Stats

HEAD TO HEAD
D. Back vs J. Yun Yun

Dayeon Back

KOR

1

Win

Played

0

Win

Age

Height

318

C. Rank

Ret.

293

Best Rank

Total Titles

YTD Titles

$4.2K

Career Money

Plays

Ji Yun Yun

KOR

1

Win

Played

0

Win

Age

Height

318

C. Rank

Ret.

293

Best Rank

Total Titles

YTD Titles

$4.2K

Career Money

Plays

Head-to-head: Back 1 - 0 Yun

They have played 2 sets in total, with Dayeon Back winning 2 and Ji Yun Yun winning 0. The last match between Dayeon Back and Ji Yun Yun was at the Yeongwol, 28-08-2017, Round: Q1, Surface: Hard, with Dayeon Back getting the victory 6-2 6-2.

Players	Head To Head Match Wins
Back	1
Yun	0

Last 1 H2H Matches:

(Q1) Yeongwol(08-28-17)

Stats

Dayeon Back

Ji Yun Yun

D. Back vs J. Y. Yun H2H Profile

D. Back	Stats	J. Y. Yun
$4,220	Career Prize Money	$0
69.12% (197-88)	Career Total W/L	31.91% (15-32)
1	Hard	0
9	Titles	0
1	Total H2H Matches	0
50.00% (3-3)	YTD Win/Loss	0% (0-0)

D. Back vs J. Y. Yun Match Preview:

Second serve performance recent form: In recent form (last 6 months), Dayeon Back has won 37.78% of points on their second serve, while Ji Yun Yun has won 0%. There is a high correlation between this stat and match prediction accuracy.
Return game stats recent form: Return stats show Dayeon Back, in recent form, has won 54.14% of their opponent's second serve points, while Ji Yun Yun has won 0%. The same stats for first serve returns are 34.85% and 0% respectively and this has a high correlation to pick who is favored in this H2H matchup.
Under pressure analysis: Dayeon Back has saved 44.84% of breakpoints in recent form, whereas Ji Yun Yun has saved 0% which is a useful statistic for in-game betting predictions.
Performance overview: Over the last year Dayeon Back has won 67.12% of matches played (W/L 49/24), with Ji Yun Yun winning 0% (W/L 0/0) that gives us an overall head-to head prediction overview.
Best surface: Dayeon Back has their best career surface win % on Hard, winning 70% (W/L 178/78), and worse career win % on I.hard, winning 50% (W/L 3/3). Ji Yun Yun has their best career surface win % on Hard, winning 70% (W/L 15/31), and worse career win % on I.hard, winning 0% (W/L 0/1).
Player level: In the last year, Dayeon Back has played most of their matches on the Challengers/ITF tournaments > $10K, winning 66.07% of matches (W/L 37/19), where as Ji Yun Yun has played most of their matches on the N/A, winning 0% of matches (W/L 0/0). When comparing stats between players to predict the favorite, it is of course all relative to the event level they have been playing at.
Direct H2H matches: They have played 1 times before with Dayeon Back winning 1 times and Ji Yun Yun being victorious 0 times. They have played 2 sets in total, with Dayeon Back winning 2 and Ji Yun Yun winning 0.
The last match between Dayeon Back and Ji Yun Yun was at the Yeongwol, 28-08-2017, Round: Q1, Surface: Hard, with Dayeon Back getting the victory 6-2 6-2.
Head to head match duration: In past head to head matches, the average match time between these players has been 0:0:0.
Opponent quality stats: Over the last 12 months, Dayeon Back has played against opponents with an average rank of 447.6 while Ji Yun Yun has played against players with an average rank of 0.
Deciding set performance vs all players: If you are interested in live predictions and betting, if this match goes into a deciding set, Dayeon Back has won 60% of deciding sets over the last 12 months, while Ji Yun Yun has won 0% in all matches played on tour.
Break point conversion: In recent form, Dayeon Back has converted 36.69% of breakpoint opportunities, and Ji Yun Yun has converted 0% of their chances to break their opponents serve. A telling stat for in-game live betting tips when either player has a breakpoint opportunity.

Dayeon Back vs Ji Yun Yun Editorial Preview By TennisTipster88.

D. Back vs J. Y. Yun H2H Stats Used In Our Predictions

D. Back	Stats	J. Y. Yun
1	H2H Matches Won	0
2	Sets Won	0
12	Games Won	4
0:0:0	Average Match Time	0:0:0
100% (1/1)	Best‑of‑3 Win %	0% (0/1)
100% (1/1)	1st Set Won, Won Match	0% (0/0)
0% (0/1)	1st Set Won, Lost Match	0% (0/0)
0% (0/0)	1st Set Lost, Won Match	0% (0/1)

Recent Performance Stats

D. Back Recent Matches Played

OPPONENT	RESULT	SCORE	H2H
W35 Makinohara - 27-10-2025
QF Eunhye LeeE. Lee	W	6-3 6-4	Stats
R2 Rinko MatsudaR. Matsuda	W	6-3 6-1	Stats
R1 Meng Yi ChenM. Yi	W	6-2 6-0	Stats
W35 Kunshan - 06-10-2025
SF Carol Young Suh LeeC. Young	L	3-6 7-5 6-3	Stats
QF Ekaterina ReyngoldE. Reyngold	W	6-2 6-3	Stats

View All

J. Y. Yun Recent Matches Played

OPPONENT	RESULT	SCORE	H2H
Yeongwol - 03-09-2018
Q2 Jiwoo MunJ. Mun	L	6-4 3-6 6-3	Stats
Gyeongsan - 11-06-2018
Q2 Haine OgataH. Ogata	L	6-4 2-6 6-1	Stats
Q1 Suhyeon LeeS. Lee	W	6-0 6-0	Stats
Sangju - 04-06-2018
Q1 Jin Ju LeeJ. Ju	L	6-3 7-5	Stats
Yeongwol - 28-08-2017
Q1 Dayeon BackD. Back	L	6-2 6-2	Stats

View All

D. Back vs J. Y. Yun Stats Breakdown Vs All H2H Opponents

D. Back	Stats	J. Y. Yun
69.12% (197/88)	YTD Win/Loss	31.91% (15/32)
65.53% (422/222)	Sets Win/Loss	36.11% (39/69)
57.61% (3244/2387)	Games Win/Loss	44.19% (399/504)
69.53% (178/78)	Hard Win/Loss	32.61% (15/31)
61.54% (8/5)	Clay Win/Loss	0% (0/0)
68.75% (11/5)	Indoor Hard W/L	0.00% (0/1)
0.05	Aces Per Game	0
144	Aces Total	0
0.15	Double Faults Per Game	0
409	Total Double Faults	0
1:30:36	Average Match Time	1st Match
461.56	Average Opponent Rank	166.62
68% (10966/16047)	1st Serve %	0% (0/0)
60% (6599/10966)	1st Serve Win %	0% (0/0)
46% (2336/5081)	2nd Serve Win %	0% (0/0)
51% (1184/2337)	Break Points Won % (Total)	0% (0/0)
50% (8030/15998)	Return Points Win %	0% (0/0)
62.50% (5/3)	Cups W/L	0% (0/0)
42.86% (3/4)	Main Tour W/L	0% (0/0)
64.52% (80/44)	Challenger W/L	25.00% (2/6)
74.66% (109/37)	Futures W/L	33.33% (13/26)
69% (192/279)	Best of 3 Sets Win %	32% (15/47)
53% (28/53)	Tiebreaks Win % (Total)	75% (3/4)
58% (46/79)	Deciding Set Win %	36% (5/14)
88% (185/163)	1st Set Won, Won Match	79% (19/15)
12% (185/22)	1st Set Won, Lost Match	21% (19/4)
33% (100/33)	1st Set Lost, Won Match	0% (28/0)