Ji Sung Nam vs Jumpei Yamasaki Head-to-Head Stats, Results & Performance Comparison

Wojtek Kolan

Our Predictions

H2H Records Career Stats

HEAD TO HEAD
J. Sung Nam vs J. Yamasaki

Ji Sung Nam

KOR

2

Win

Played

1

Win

Age

6'0" (183 cm)

Height

5'11" (180 cm)

770

C. Rank

896

236

Best Rank

446

Total Titles

YTD Titles

$1.4K

Career Money

Right-Handed

Plays

Right-Handed

Jumpei Yamasaki

JPN

2

Win

Played

1

Win

Age

6'0" (183 cm)

Height

5'11" (180 cm)

770

C. Rank

896

236

Best Rank

446

Total Titles

YTD Titles

$1.4K

Career Money

Right-Handed

Plays

Right-Handed

Head-to-head: Nam 2 - 1 Yamasaki

They have played 7 sets in total, with Ji Sung Nam winning 5 and Jumpei Yamasaki winning 2. The last match between Ji Sung Nam and Jumpei Yamasaki was at the Yokkaichi Challenger, 06-08-2019, Round: R2, Surface: Hard, with Ji Sung Nam getting the victory 6-3 6-2.

Players	Head To Head Match Wins
Nam	2
Yamasaki	1

Last 3 H2H Matches:

(R2) Yokkaichi Challenger(08-06-19)

Stats

Ji Sung Nam

Jumpei Yamasaki

(R1) M15 Kashiwa(04-03-19)

Stats

Jumpei Yamasaki

Ji Sung Nam

(SF) M15 Nishi-Tama(03-09-19)

Stats

Ji Sung Nam

Jumpei Yamasaki

J. S. Nam vs J. Yamasaki H2H Profile

J. S. Nam	Stats	J. Yamasaki
$1,445	Career Prize Money	$0
56.33% (307-238)	Career Total W/L	57.86% (265-193)
2	Hard	1
6	Titles	3
2	Total H2H Matches	1
0% (0-0)	YTD Win/Loss	0% (0-0)

J. S. Nam vs J. Yamasaki Match Preview:

Second serve performance recent form: In recent form (last 6 months), Ji Sung Nam has won 38.62% of points on their second serve, while Jumpei Yamasaki has won 43.25%. There is a high correlation between this stat and match prediction accuracy.
Return game stats recent form: Return stats show Ji Sung Nam, in recent form, has won 45.64% of their opponent's second serve points, while Jumpei Yamasaki has won 48.78%. The same stats for first serve returns are 29.75% and 26.42% respectively and this has a high correlation to pick who is favored in this H2H matchup.
Under pressure analysis: Ji Sung Nam has saved 55.56% of breakpoints in recent form, whereas Jumpei Yamasaki has saved 47.71% which is a useful statistic for in-game betting predictions.
Performance overview: Over the last year Ji Sung Nam has won 58.33% of matches played (W/L 21/15), with Jumpei Yamasaki winning 63.27% (W/L 31/18) that gives us an overall head-to head prediction overview.
Best surface: Ji Sung Nam has their best career surface win % on Hard, winning 58% (W/L 256/186), and worse career win % on Grass, winning 33% (W/L 1/2). Jumpei Yamasaki has their best career surface win % on I.hard, winning 58% (W/L 18/12), and worse career win % on Clay, winning 55% (W/L 31/25).
Player level: In the last year, Ji Sung Nam has played most of their matches on the Futures/Satellites/ITF tournaments $10K, winning 69.57% of matches (W/L 16/7), where as Jumpei Yamasaki has played most of their matches on the Futures/Satellites/ITF tournaments $10K, winning 63.27% of matches (W/L 31/18). 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 3 times before with Ji Sung Nam winning 2 times and Jumpei Yamasaki being victorious 1 times. They have played 7 sets in total, with Ji Sung Nam winning 5 and Jumpei Yamasaki winning 2.
The last match between Ji Sung Nam and Jumpei Yamasaki was at the Yokkaichi Challenger, 06-08-2019, Round: R2, Surface: Hard, with Ji Sung Nam getting the victory 6-3 6-2.
Head to head match duration: In past head to head matches, the average match time between these players has been 1:32:29.
Opponent quality stats: Over the last 12 months, Ji Sung Nam has played against opponents with an average rank of 421.64 while Jumpei Yamasaki has played against players with an average rank of 389.67.
Deciding set performance vs all players: If you are interested in live predictions and betting, if this match goes into a deciding set, Ji Sung Nam has won 54% of deciding sets over the last 12 months, while Jumpei Yamasaki has won 30% in all matches played on tour.
Break point conversion: In recent form, Ji Sung Nam has converted 45.83% of breakpoint opportunities, and Jumpei Yamasaki has converted 29.55% of their chances to break their opponents serve. A telling stat for in-game live betting tips when either player has a breakpoint opportunity.

Ji Sung Nam vs Jumpei Yamasaki Editorial Preview By TennisTipster88.

J. S. Nam vs J. Yamasaki H2H Stats Used In Our Predictions

J. S. Nam	Stats	J. Yamasaki
2	H2H Matches Won	1
5	Sets Won	2
39	Games Won	23
10	Aces (Total)	5
7	Total Double Faults	8
1:32:29	Average Match Time	1:32:29
60% (111/185)	1st Serve %	59% (127/217)
70% (78/111)	1st Serve Win %	61% (78/127)
49% (36/74)	2nd Serve Win %	39% (35/90)
39% (15/38)	Break Pts Won %	47% (7/15)
48% (104/217)	Return Points Win %	38% (71/185)
67% (2/3)	Best‑of‑3 Win %	33% (1/3)
0% (0/1)	Deciding Set Win %	100% (1/1)
100% (2/2)	1st Set Won, Won Match	100% (1/1)
0% (0/2)	1st Set Won, Lost Match	0% (0/1)
0% (0/1)	1st Set Lost, Won Match	0% (0/2)

Recent Performance Stats

J. S. Nam Recent Matches Played

OPPONENT	RESULT	SCORE	H2H
Taipei Challenger - 03-11-2025
Q1 Ren NakamuraR. Nakamura	W	6-1 6-2	Stats
Seoul Challenger - 27-10-2025
Q3 Uisung ParkU. Park	L	6-4 6-1	Stats
Q1 Neil OberleitnerN. Oberleitner	W	6-3 4-6 6-1	Stats
Zhangjiagang Challenger - 25-08-2025
Q3 Tsung-Hao HuangT. Huang	L	6-2 6-4	Stats
Q1 Niki Kaliyanda PoonachaN. Kaliyanda	W	6-4 ret.	Stats

View All

J. Yamasaki Recent Matches Played

OPPONENT	RESULT	SCORE	H2H
M25 Takasaki - 15-09-2025
QF Takuya KumasakaT. Kumasaka	L	6-7(6) 6-0 6-3	Stats
R2 Taiyo YamanakaT. Yamanaka	W	6-2 6-3	Stats
R1 Dominik PalanD. Palan	W	6-2 ret.	Stats
Q3 Jonathan MridhaJ. Mridha	W	7-5 7-6(6)	Stats
Q1 Ko SuzukiK. Suzuki	W	6-4 6-2	Stats

View All

J. S. Nam vs J. Yamasaki Stats Breakdown Vs All H2H Opponents

J. S. Nam	Stats	J. Yamasaki
56.33% (307/238)	YTD Win/Loss	57.86% (265/193)
55.75% (688/546)	Sets Win/Loss	56.06% (578/453)
52.32% (5977/5446)	Games Win/Loss	52.75% (5011/4489)
57.92% (256/186)	Hard Win/Loss	58.17% (210/151)
50.00% (28/28)	Clay Win/Loss	55.36% (31/25)
50.00% (22/22)	Indoor Hard W/L	58.54% (24/17)
33.33% (1/2)	Grass Win/Loss	0% (0/0)
0.18	Aces Per Game	0.22
1026	Aces Total	1012
0.17	Double Faults Per Game	0.1
962	Total Double Faults	447
1st Match	Average Match Time	1:21:7
581.5	Average Opponent Rank	499.43
65% (14326/22038)	1st Serve %	64% (14499/22594)
67% (9663/14326)	1st Serve Win %	66% (9502/14499)
49% (3764/7712)	2nd Serve Win %	50% (4014/8095)
44% (1158/2629)	Break Points Won % (Total)	44% (1029/2323)
43% (9925/23188)	Return Points Win %	41% (9439/23073)
0.00% (0/1)	Slam W/L	0% (0/0)
50.00% (3/3)	Cups W/L	0% (0/0)
20.00% (1/4)	Main Tour W/L	0% (0/0)
49.77% (108/109)	Challenger W/L	36.11% (13/23)
61.71% (195/121)	Futures W/L	59.72% (252/170)
56% (297/529)	Best of 3 Sets Win %	57% (255/446)
100% (4/4)	Best of 5 Sets Win %	100% (6/6)
54% (75/140)	Tiebreaks Win % (Total)	52% (56/108)
48% (73/153)	Deciding Set Win %	54% (62/115)
86% (305/262)	1st Set Won, Won Match	88% (259/227)
14% (305/42)	1st Set Won, Lost Match	12% (259/32)
19% (239/45)	1st Set Lost, Won Match	19% (198/37)