Alex Knaff vs Seongbin Sim Head-to-Head Stats, Results & Performance Comparison

Wojtek Kolan

Our Predictions

H2H Records Career Stats

HEAD TO HEAD
A. Knaff vs S. Sim

Alex Knaff

LUX

1

Win

Played

0

Win

Age

Height

717

C. Rank

486

Best Rank

Total Titles

YTD Titles

Career Money

Plays

Seongbin Sim

KOR

1

Win

Played

0

Win

Age

Height

717

C. Rank

486

Best Rank

Total Titles

YTD Titles

Career Money

Plays

Head-to-head: Knaff 1 - 0 Sim

They have played 3 sets in total, with Alex Knaff winning 2 and Seongbin Sim winning 1. The last match between Alex Knaff and Seongbin Sim was at the M25 Hong Kong, 28-08-2024, Round: R1, Surface: Hard, with Draw getting the victory 7-6(4) 4-6 6-2.

Players	Head To Head Match Wins
Knaff	1
Sim	0

Last 1 H2H Matches:

(R1) M25 Hong Kong(08-28-24)

Stats

Alex Knaff

Seongbin Sim

A. Knaff vs S. Sim H2H Profile

A. Knaff	Stats	S. Sim
$0	Career Prize Money	$0
59.63% (226-153)	Career Total W/L	57.23% (95-71)
1	Hard	0
3	Titles	0
1	Total H2H Matches	0
50.00% (1-1)	YTD Win/Loss	0% (0-0)

A. Knaff vs S. Sim Match Preview:

Second serve performance recent form: In recent form (last 6 months), Alex Knaff has won 43.24% of points on their second serve, while Seongbin Sim has won 40.53%. There is a high correlation between this stat and match prediction accuracy.
Return game stats recent form: Return stats show Alex Knaff, in recent form, has won 49.01% of their opponent's second serve points, while Seongbin Sim has won 47.37%. The same stats for first serve returns are 24.73% and 25.21% respectively and this has a high correlation to pick who is favored in this H2H matchup.
Under pressure analysis: Alex Knaff has saved 47.87% of breakpoints in recent form, whereas Seongbin Sim has saved 49.73% which is a useful statistic for in-game betting predictions.
Performance overview: Over the last year Alex Knaff has won 59.57% of matches played (W/L 28/19), with Seongbin Sim winning 55.56% (W/L 30/24) that gives us an overall head-to head prediction overview.
Best surface: Alex Knaff has their best career surface win % on I.hard, winning 67% (W/L 51/25), and worse career win % on Clay, winning 53% (W/L 62/55). Seongbin Sim has their best career surface win % on I.hard, winning 67% (W/L 20/8), and worse career win % on Grass, winning 33% (W/L 1/2).
Player level: In the last year, Alex Knaff has played most of their matches on the Futures/Satellites/ITF tournaments $10K, winning 61.36% of matches (W/L 27/17), where as Seongbin Sim has played most of their matches on the Futures/Satellites/ITF tournaments $10K, winning 55.56% of matches (W/L 30/24). 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 Alex Knaff winning 1 times and Seongbin Sim being victorious 0 times. They have played 3 sets in total, with Alex Knaff winning 2 and Seongbin Sim winning 1.
The last match between Alex Knaff and Seongbin Sim was at the M25 Hong Kong, 28-08-2024, Round: R1, Surface: Hard, with Draw getting the victory 7-6(4) 4-6 6-2.
Head to head match duration: In past head to head matches, the average match time between these players has been 2:56:0.
Opponent quality stats: Over the last 12 months, Alex Knaff has played against opponents with an average rank of 501.02 while Seongbin Sim has played against players with an average rank of 336.15.
Deciding set performance vs all players: If you are interested in live predictions and betting, if this match goes into a deciding set, Alex Knaff has won 69% of deciding sets over the last 12 months, while Seongbin Sim has won 53% in all matches played on tour.
Break point conversion: In recent form, Alex Knaff has converted 41.07% of breakpoint opportunities, and Seongbin Sim has converted 27.64% of their chances to break their opponents serve. A telling stat for in-game live betting tips when either player has a breakpoint opportunity.

Alex Knaff vs Seongbin Sim Editorial Preview By TennisTipster88.

A. Knaff vs S. Sim H2H Stats Used In Our Predictions

A. Knaff	Stats	S. Sim
1	H2H Matches Won	0
2	Sets Won	1
17	Games Won	14
7	Aces (Total)	5
6	Total Double Faults	3
2:56:0	Average Match Time	2:56:0
60% (62/103)	1st Serve %	63% (57/90)
68% (42/62)	1st Serve Win %	70% (40/57)
68% (28/41)	2nd Serve Win %	61% (20/33)
100% (3/3)	Break Pts Won %	29% (2/7)
33% (30/90)	Return Points Win %	32% (33/103)
100% (1/1)	Best‑of‑3 Win %	0% (0/1)
100% (1/1)	Deciding Set 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

A. Knaff Recent Matches Played

OPPONENT	RESULT	SCORE	H2H
Athens Challenger - 24-11-2025
Q3 Charlie RobertsonC. Robertson	L	6-4 6-3	Stats
M25 Sarreguemines - 20-10-2025
R2 Ben JonesB. Jones	L	w/o	Stats
R1 Romain AndresR. Andres	W	6-4 6-2	Stats
M15 Villers-les-Nancy - 13-10-2025
SF Robin CatryR. Catry	L	7-6(5) 2-6 6-1	Stats
QF Loann MassardL. Massard	W	1-6 7-6(8) 6-4	Stats

View All

S. Sim Recent Matches Played

OPPONENT	RESULT	SCORE	H2H
M15 Gimcheon - 17-11-2025
R1 Min Ho KoM. Ho	L	3-6 6-4 6-3	Stats
M15 Yanagawa City - 27-10-2025
R1 Ryota TanumaR. Tanuma	L	6-4 6-1	Stats
M15 Maanshan - 01-09-2025
SF Egor AgafonovE. Agafonov	L	6-1 6-2	Stats
QF Yuta KikuchiY. Kikuchi	W	6-4 6-4	Stats
R2 Artur KukasianA. Kukasian	W	6-3 7-6(3)	Stats

View All

A. Knaff vs S. Sim Stats Breakdown Vs All H2H Opponents

A. Knaff	Stats	S. Sim
59.63% (226/153)	YTD Win/Loss	57.23% (95/71)
57.70% (502/368)	Sets Win/Loss	57.18% (215/161)
53.63% (4369/3778)	Games Win/Loss	52.31% (1877/1711)
60.34% (108/71)	Hard Win/Loss	54.62% (65/54)
52.99% (62/55)	Clay Win/Loss	56.25% (9/7)
67.47% (56/27)	Indoor Hard W/L	71.43% (20/8)
0% (0/0)	Grass Win/Loss	33.33% (1/2)
0.27	Aces Per Game	0.19
1093	Aces Total	327
0.23	Double Faults Per Game	0.16
925	Total Double Faults	273
1:19:25	Average Match Time	1st Match
436.66	Average Opponent Rank	247.29
63% (12256/19487)	1st Serve %	60% (3193/5315)
69% (8408/12256)	1st Serve Win %	67% (2128/3193)
50% (3596/7231)	2nd Serve Win %	49% (1037/2122)
44% (917/2093)	Break Points Won % (Total)	42% (227/536)
41% (8290/20045)	Return Points Win %	40% (2096/5238)
46.15% (6/7)	Cups W/L	0% (0/0)
37.50% (3/5)	Challenger W/L	50.00% (2/2)
60.61% (217/141)	Futures W/L	57.41% (93/69)
60% (225/376)	Best of 3 Sets Win %	58% (94/163)
0% (0/2)	Best of 5 Sets Win %	0% (0/1)
57% (51/89)	Tiebreaks Win % (Total)	62% (23/37)
54% (60/111)	Deciding Set Win %	44% (20/45)
89% (216/192)	1st Set Won, Won Match	89% (97/86)
11% (216/24)	1st Set Won, Lost Match	11% (97/11)
20% (163/33)	1st Set Lost, Won Match	13% (69/9)