Stefan Kozlov vs Guilherme Clezar Head-to-Head Stats, Results & Performance Comparison
Wojtek Kolan
HEAD TO HEAD
S. Kozlov vs G. Clezar
Stefan Kozlov
USA
l
w
l
l
w
l
w
l
w
w
2
Win
2
Played
0
Win
27
Age
32
6'0" (183 cm)
Height
5'11" (180 cm)
458
C. Rank
878
103
Best Rank
153
0
Total Titles
0
0
YTD Titles
0
$372.0K
Career Money
$133.1K
Right-Handed
Plays
Right-Handed
Guilherme Clezar
BRA
l
w
l
l
l
l
w
w
l
l
2
Win
2
Played
0
Win
27
Age
32
6'0" (183 cm)
Height
5'11" (180 cm)
458
C. Rank
878
103
Best Rank
153
0
Total Titles
0
0
YTD Titles
0
$372.0K
Career Money
$133.1K
Right-Handed
Plays
Right-Handed
Head-to-head: Kozlov 2 - 0 Clezar
They have played 4 sets in total, with Stefan Kozlov winning 4 and Guilherme Clezar winning 0. The last match between Stefan Kozlov and Guilherme Clezar was at the Newport Beach Challenger, 22-01-2018, Round: R1, Surface: Hard, with Stefan Kozlov getting the victory 6-2 6-3.
| Players | Head To Head Match Wins |
|---|---|
| Kozlov | 2 |
| Clezar | 0 |
Last 2 H2H Matches:
(R1) Newport Beach Challenger(01-22-18)
Stefan Kozlov
6
6
Guilherme Clezar
2
3
(R1) Tiburon Challenger(09-26-16)
Stefan Kozlov
6
6
Guilherme Clezar
2
2
S. Kozlov vs G. Clezar H2H Profile
S. Kozlov vs G. Clezar Match Preview:
- Second serve performance recent form: In recent form (last 6 months), Stefan Kozlov has won 45.84% of points on their second serve, while Guilherme Clezar has won 0%. There is a high correlation between this stat and match prediction accuracy.
- Return game stats recent form: Return stats show Stefan Kozlov, in recent form, has won 49.26% of their opponent's second serve points, while Guilherme Clezar has won 0%. The same stats for first serve returns are 29.36% and 0% respectively and this has a high correlation to pick who is favored in this H2H matchup.
- Under pressure analysis: Stefan Kozlov has saved 51.90% of breakpoints in recent form, whereas Guilherme Clezar has saved 0% which is a useful statistic for in-game betting predictions.
- Performance overview: Over the last year Stefan Kozlov has won 67.65% of matches played (W/L 23/11), with Guilherme Clezar winning 0% (W/L 0/0) that gives us an overall head-to head prediction overview.
- Best surface: Stefan Kozlov has their best career surface win % on I.hard, winning 63% (W/L 83/48), and worse career win % on Grass, winning 38% (W/L 15/24). Guilherme Clezar has their best career surface win % on Clay, winning 63% (W/L 286/239), and worse career win % on Grass, winning 0% (W/L 0/4).
- Player level: In the last year, Stefan Kozlov has played most of their matches on the Challengers/ITF tournaments > $10K, winning 65.38% of matches (W/L 17/9), where as Guilherme Clezar 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 2 times before with Stefan Kozlov winning 2 times and Guilherme Clezar being victorious 0 times. They have played 4 sets in total, with Stefan Kozlov winning 4 and Guilherme Clezar winning 0.
- The last match between Stefan Kozlov and Guilherme Clezar was at the Newport Beach Challenger, 22-01-2018, Round: R1, Surface: Hard, with Stefan Kozlov getting the victory 6-2 6-3.
- Head to head match duration: In past head to head matches, the average match time between these players has been 1:13:15.
- Opponent quality stats: Over the last 12 months, Stefan Kozlov has played against opponents with an average rank of 405.74 while Guilherme Clezar 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, Stefan Kozlov has won 64% of deciding sets over the last 12 months, while Guilherme Clezar has won 0% in all matches played on tour.
- Break point conversion: In recent form, Stefan Kozlov has converted 39.25% of breakpoint opportunities, and Guilherme Clezar 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.
Stefan Kozlov vs Guilherme Clezar Editorial Preview By TennisTipster88.
S. Kozlov vs G. Clezar H2H Stats Used In Our Predictions
| Stats | ||
|---|---|---|
| 2 | H2H Matches Won | 0 |
| 4 | Sets Won | 0 |
| 24 | Games Won | 9 |
| 16 | Aces (Total) | 3 |
| 7 | Total Double Faults | 4 |
| 1:13:15 | Average Match Time | 1:13:15 |
| 62% (61/98) | 1st Serve % | 60% (75/124) |
| 82% (50/61) | 1st Serve Win % | 55% (41/75) |
| 49% (18/37) | 2nd Serve Win % | 41% (20/49) |
| 56% (9/16) | Break Pts Won % | 17% (1/6) |
| 51% (63/124) | Return Points Win % | 31% (30/98) |
| 100% (2/2) | Best‑of‑3 Win % | 0% (0/2) |
| 100% (2/2) | 1st Set Won, Won Match | 0% (0/0) |
| 0% (0/2) | 1st Set Won, Lost Match | 0% (0/0) |
| 0% (0/0) | 1st Set Lost, Won Match | 0% (0/2) |
Recent Performance Stats
2nd Serve Win %: Kozlov 48%, Clezar 0%.
Opp 2nd Serve Pts Won: Kozlov 55%, Clezar 0%.
Break Points Saved %: Kozlov 57%, Clezar 0%.
S. Kozlov Recent Matches Played
| OPPONENT | RESULT | SCORE | H2H | |
|---|---|---|---|---|
 Champaign Challenger - 10-11-2025 | ||||
R2 Tyler ZinkT. Zink | W | 6-3 6-3 | ||
R1  Leo BorgL. Borg | W | 6-1 6-0 | ||
| Knoxville Challenger - 03-11-2025 | ||||
R2  Jay ClarkeJ. Clarke | L | 6-2 2-6 6-3 | ||
R1  Dominique RollandD. Rolland | W | 7-6(1) 2-6 6-1 | ||
| Chicago Challenger - 04-08-2025 | ||||
Q3  Tsung-Hao HuangT. Huang | L | 1-6 7-5 6-2 | ||
G. Clezar Recent Matches Played
| OPPONENT | RESULT | SCORE | H2H | |
|---|---|---|---|---|
 Porto Alegre Challenger - 29-04-2024 | ||||
R1  Juan Bautista TorresJ. Bautista | L | 6-2 6-0 | ||
| M25+H Lajeado - 21-11-2022 | ||||
QF Nicolas ZanellatoN. Zanellato | L | 6-2 7-5 | ||
R2 Enrique BogoE. Bogo | W | 7-5 6-0 | ||
R1  Arklon Huertas Del PinoA. Huertas | W | 7-6(6) 6-3 | ||
| Rio De Janeiro Challenger - 13-12-2021 | ||||
R1 Genaro Alberto OlivieriG. Alberto | L | 5-7 6-4 6-3 | ||
S. Kozlov vs G. Clezar Stats Breakdown Vs All H2H Opponents
| Stats | ||
|---|---|---|
| 56.83% (341/259) | YTD Win/Loss | 52.57% (338/305) |
| 54.10% (765/649) | Sets Win/Loss | 52.63% (800/720) |
| 51.54% (6777/6373) | Games Win/Loss | 51.24% (7500/7136) |
| 55.33% (166/134) | Hard Win/Loss | 45.19% (47/57) |
| 59.23% (77/53) | Clay Win/Loss | 54.48% (286/239) |
| 63.36% (83/48) | Indoor Hard W/L | 50.00% (5/5) |
| 38.46% (15/24) | Grass Win/Loss | 0.00% (0/4) |
| 0.23 | Aces Per Game | 0.29 |
| 1445 | Aces Total | 2081 |
| 0.33 | Double Faults Per Game | 0.19 |
| 2112 | Total Double Faults | 1368 |
| 1:35:6 | Average Match Time | 1:21:21 |
| 564.78 | Average Opponent Rank | 618.67 |
| 61% (22942/37509) | 1st Serve % | 63% (23360/37283) |
| 66% (15192/22942) | 1st Serve Win % | 69% (16093/23360) |
| 48% (7031/14567) | 2nd Serve Win % | 51% (7102/13923) |
| 42% (1782/4217) | Break Points Won % (Total) | 40% (1438/3578) |
| 42% (15814/38018) | Return Points Win % | 38% (14306/37261) |
| 31.03% (9/20) | Slam W/L | 32.14% (9/19) |
| 23.53% (4/13) | Masters W/L | 0.00% (0/1) |
| 0% (0/0) | Cups W/L | 0.00% (0/3) |
| 38.81% (26/41) | Main Tour W/L | 43.40% (23/30) |
| 58.26% (201/144) | Challenger W/L | 50.59% (216/211) |
| 71.13% (101/41) | Futures W/L | 68.70% (90/41) |
| 57% (333/582) | Best of 3 Sets Win % | 53% (333/628) |
| 45% (5/11) | Best of 5 Sets Win % | 38% (3/8) |
| 48% (69/144) | Tiebreaks Win % (Total) | 49% (115/236) |
| 61% (128/209) | Deciding Set Win % | 48% (111/233) |
| 87% (313/273) | 1st Set Won, Won Match | 80% (345/275) |
| 12% (313/38) | 1st Set Won, Lost Match | 19% (345/66) |
| 24% (287/68) | 1st Set Lost, Won Match | 21% (298/63) |
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