Jozef Kovalik vs Steven Diez Head-to-Head Stats, Results & Performance Comparison

Wojtek Kolan

Our Predictions

H2H Records Career Stats

HEAD TO HEAD
J. Kovalik vs S. Diez

Jozef Kovalik

SVK

3

Win

Played

0

Win

Age

6'0" (183 cm)

Height

5'9" (175 cm)

533

C. Rank

882

Best Rank

134

Total Titles

YTD Titles

$787.8K

Career Money

$335.9K

Right-Handed

Plays

Right-Handed

Steven Diez

CAN

3

Win

Played

0

Win

Age

6'0" (183 cm)

Height

5'9" (175 cm)

533

C. Rank

882

Best Rank

134

Total Titles

YTD Titles

$787.8K

Career Money

$335.9K

Right-Handed

Plays

Right-Handed

Head-to-head: Kovalik 3 - 0 Diez

They have played 8 sets in total, with Jozef Kovalik winning 6 and Steven Diez winning 2. The last match between Jozef Kovalik and Steven Diez was at the Cagliari Challenger, 03-05-2023, Round: R1, Surface: Clay, with Jozef Kovalik getting the victory 7-6(2) 6-4.

Players	Head To Head Match Wins
Kovalik	3
Diez	0

Last 3 H2H Matches:

(R1) Cagliari Challenger(05-03-23)

Stats

Jozef Kovalik

Steven Diez

(SF) Itajai Challenger(04-14-13)

Stats

Jozef Kovalik

Steven Diez

(R1) Salinas Challenger(02-26-13)

Stats

Jozef Kovalik

Steven Diez

J. Kovalik vs S. Diez H2H Profile

J. Kovalik	Stats	S. Diez
$787,770	Career Prize Money	$335,910
56.84% (511-388)	Career Total W/L	54.64% (571-474)
3	Clay	0
18	Titles	24
3	Total H2H Matches	0
0.00% (0-1)	YTD Win/Loss	0% (0-0)

J. Kovalik vs S. Diez Match Preview:

Second serve performance recent form: In recent form (last 6 months), Jozef Kovalik has won 45.16% of points on their second serve, while Steven Diez has won 38.58%. There is a high correlation between this stat and match prediction accuracy.
Return game stats recent form: Return stats show Jozef Kovalik, in recent form, has won 46.72% of their opponent's second serve points, while Steven Diez has won 44.68%. The same stats for first serve returns are 27.20% and 35.26% respectively and this has a high correlation to pick who is favored in this H2H matchup.
Under pressure analysis: Jozef Kovalik has saved 48.39% of breakpoints in recent form, whereas Steven Diez has saved 50.00% which is a useful statistic for in-game betting predictions.
Performance overview: Over the last year Jozef Kovalik has won 39.02% of matches played (W/L 16/25), with Steven Diez winning 52.00% (W/L 13/12) that gives us an overall head-to head prediction overview.
Best surface: Jozef Kovalik has their best career surface win % on Clay, winning 61% (W/L 394/248), and worse career win % on Grass, winning 24% (W/L 4/13). Steven Diez has their best career surface win % on Hard, winning 61% (W/L 212/163), and worse career win % on Grass, winning 25% (W/L 3/9).
Player level: In the last year, Jozef Kovalik has played most of their matches on the Challengers/ITF tournaments > $10K, winning 44.44% of matches (W/L 12/15), where as Steven Diez has played most of their matches on the Futures/Satellites/ITF tournaments $10K, winning 58.82% of matches (W/L 10/7). 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 Jozef Kovalik winning 3 times and Steven Diez being victorious 0 times. They have played 8 sets in total, with Jozef Kovalik winning 6 and Steven Diez winning 2.
The last match between Jozef Kovalik and Steven Diez was at the Cagliari Challenger, 03-05-2023, Round: R1, Surface: Clay, with Jozef Kovalik getting the victory 7-6(2) 6-4.
Head to head match duration: In past head to head matches, the average match time between these players has been 2:1:37.
Opponent quality stats: Over the last 12 months, Jozef Kovalik has played against opponents with an average rank of 268.17 while Steven Diez has played against players with an average rank of 354.
Deciding set performance vs all players: If you are interested in live predictions and betting, if this match goes into a deciding set, Jozef Kovalik has won 31% of deciding sets over the last 12 months, while Steven Diez has won 14% in all matches played on tour.
Break point conversion: In recent form, Jozef Kovalik has converted 30.95% of breakpoint opportunities, and Steven Diez has converted 47.83% of their chances to break their opponents serve. A telling stat for in-game live betting tips when either player has a breakpoint opportunity.

Jozef Kovalik vs Steven Diez Editorial Preview By TennisTipster88.

J. Kovalik vs S. Diez H2H Stats Used In Our Predictions

J. Kovalik	Stats	S. Diez
3	H2H Matches Won	0
6	Sets Won	2
42	Games Won	30
7	Aces (Total)	2
5	Total Double Faults	13
2:1:37	Average Match Time	2:1:37
60% (135/226)	1st Serve %	61% (139/227)
69% (93/135)	1st Serve Win %	62% (86/139)
53% (48/91)	2nd Serve Win %	43% (38/88)
48% (14/29)	Break Pts Won %	53% (9/17)
45% (103/227)	Return Points Win %	38% (85/226)
100% (3/3)	Best‑of‑3 Win %	0% (0/3)
100% (2/2)	Deciding Set Win %	0% (0/2)
100% (2/2)	1st Set Won, Won Match	0% (0/1)
0% (0/2)	1st Set Won, Lost Match	100% (1/1)
100% (1/1)	1st Set Lost, Won Match	0% (0/2)

Recent Performance Stats

J. Kovalik Recent Matches Played

OPPONENT	RESULT	SCORE	H2H
Hersonissos 6 Challenger - 13-10-2025
Q1 Alberto Barroso CamposA. Barroso	L	6-4 3-0 ret.	Stats
Bad Waltersdorf Challenger - 15-09-2025
R1 Sebastian SorgerS. Sorger	L	6-4 5-7 6-4	Stats
Q3 Marvin MoellerM. Moeller	W	6-2 7-5	Stats
Q1 Marco CecchinatoM. Cecchinato	W	7-6(3) 6-2	Stats
Szczecin Challenger - 08-09-2025
R2 Thiago Agustin TiranteT. Agustin	L	6-3 4-6 7-5	Stats

View All

S. Diez Recent Matches Played

OPPONENT	RESULT	SCORE	H2H
Heilbronn Challenger - 02-06-2025
Q1 Rei SakamotoR. Sakamoto	L	4-6 6-0 6-3	Stats
M25 Vic - 12-05-2025
QF Lorenzo GiustinoL. Giustino	L	6-1 2-1 ret.	Stats
R2 Andres Santamarta RoigA. Santamarta	W	6-3 7-5	Stats
R1 Michiel De KromM. De	W	6-1 ret.	Stats
M25 Sabadell - 28-04-2025
R1 Sekou BangouraS. Bangoura	L	4-6 7-6(4) 6-1	Stats

View All

J. Kovalik vs S. Diez Stats Breakdown Vs All H2H Opponents

J. Kovalik	Stats	S. Diez
56.84% (511/388)	YTD Win/Loss	54.64% (571/474)
54.92% (1166/957)	Sets Win/Loss	54.52% (1285/1072)
52.49% (10651/9642)	Games Win/Loss	52.19% (11187/10250)
53.29% (89/78)	Hard Win/Loss	56.53% (212/163)
61.37% (394/248)	Clay Win/Loss	55.87% (338/267)
32.88% (24/49)	Indoor Hard W/L	33.96% (18/35)
23.53% (4/13)	Grass Win/Loss	25.00% (3/9)
0.22	Aces Per Game	0.11
2205	Aces Total	1110
0.17	Double Faults Per Game	0.17
1693	Total Double Faults	1791
1:21:26	Average Match Time	1:9:1
526.8	Average Opponent Rank	572.71
59% (30371/51200)	1st Serve %	63% (29963/47216)
69% (20881/30371)	1st Serve Win %	65% (19468/29963)
52% (10883/20829)	2nd Serve Win %	49% (8390/17253)
42% (2106/5074)	Break Points Won % (Total)	46% (2388/5143)
40% (20285/51151)	Return Points Win %	42% (20073/47619)
39.73% (29/44)	Slam W/L	42.86% (15/20)
27.78% (5/13)	Masters W/L	25.00% (4/12)
27.27% (3/8)	Cups W/L	0.00% (0/4)
50.00% (75/75)	Main Tour W/L	34.48% (20/38)
58.12% (272/196)	Challenger W/L	45.31% (198/239)
70.95% (127/52)	Futures W/L	67.47% (334/161)
57% (499/871)	Best of 3 Sets Win %	55% (557/1009)
30% (6/20)	Best of 5 Sets Win %	33% (3/9)
50% (167/332)	Tiebreaks Win % (Total)	47% (109/233)
54% (163/304)	Deciding Set Win %	48% (136/285)
84% (501/421)	1st Set Won, Won Match	83% (588/490)
16% (501/80)	1st Set Won, Lost Match	16% (588/97)
22% (398/89)	1st Set Lost, Won Match	18% (456/80)