Ryan Harrison vs Stefan Kozlov Head-to-Head Stats, Results & Performance Comparison
Wojtek Kolan
HEAD TO HEAD
R. Harrison vs S. Kozlov
Ryan Harrison
USA
l
w
l
l
l
w
l
l
w
l
1
Win
4
Played
3
Win
33
Age
27
6'1" (185 cm)
Height
6'0" (183 cm)
846
C. Rank
304
40
Best Rank
103
1
Total Titles
0
0
YTD Titles
0
$2.3M
Career Money
$372.0K
Right-Handed
Plays
Right-Handed
Stefan Kozlov
USA
w
l
w
w
w
w
w
w
w
l
1
Win
4
Played
3
Win
33
Age
27
6'1" (185 cm)
Height
6'0" (183 cm)
846
C. Rank
304
40
Best Rank
103
1
Total Titles
0
0
YTD Titles
0
$2.3M
Career Money
$372.0K
Right-Handed
Plays
Right-Handed
Head-to-head: Harrison 1 - 3 Kozlov
They have played 10 sets in total, with Ryan Harrison winning 4 and Stefan Kozlov winning 6. The last match between Stefan Kozlov and Ryan Harrison was at the Cleveland Challenger, 02-02-2023, Round: R2, Surface: I.hard, with Stefan Kozlov getting the victory 6-4 6-4.
| Players | Head To Head Match Wins |
|---|---|
| Harrison | 1 |
| Kozlov | 3 |
Last 4 H2H Matches:
(R2) Cleveland Challenger(02-02-23)
Stefan Kozlov
6
6
Ryan Harrison
4
4
(SF) M15 Weston(07-04-21)
Stefan Kozlov
5
6
6
Ryan Harrison
7
3
3
(R1) Winnetka Challenger(07-07-15)
Ryan Harrison
6
6
Stefan Kozlov
4
4
R. Harrison vs S. Kozlov H2H Profile
| Stats | ||
|---|---|---|
| $2,312,315 | Career Prize Money | $371,951 |
| 53.45% (356-310) | Career Total W/L | 57.10% (346-260) |
| 0 | Clay | 1 |
| 1 | Hard | 1 |
| 0 | Indoor | 1 |
| 8 | Titles | 11 |
| 1 | Total H2H Matches | 3 |
| 0% (0-0) | YTD Win/Loss | 0% (0-0) |
R. Harrison vs S. Kozlov Match Preview:
- Second serve performance recent form: In recent form (last 6 months), Ryan Harrison has won 0% of points on their second serve, while Stefan Kozlov has won 46.08%. There is a high correlation between this stat and match prediction accuracy.
- Return game stats recent form: Return stats show Ryan Harrison, in recent form, has won 0% of their opponent's second serve points, while Stefan Kozlov has won 47.36%. The same stats for first serve returns are 0% and 29.00% respectively and this has a high correlation to pick who is favored in this H2H matchup.
- Under pressure analysis: Ryan Harrison has saved 0% of breakpoints in recent form, whereas Stefan Kozlov has saved 53.06% which is a useful statistic for in-game betting predictions.
- Performance overview: Over the last year Ryan Harrison has won 0% of matches played (W/L 0/0), with Stefan Kozlov winning 70.00% (W/L 28/12) that gives us an overall head-to head prediction overview.
- Best surface: Ryan Harrison has their best career surface win % on I.hard, winning 56% (W/L 60/48), and worse career win % on Grass, winning 44% (W/L 30/38). Stefan Kozlov has their best career surface win % on I.hard, winning 56% (W/L 86/48), and worse career win % on Grass, winning 38% (W/L 15/24).
- Player level: In the last year, Ryan Harrison has played most of their matches on the N/A, winning 0% of matches (W/L 0/0), where as Stefan Kozlov has played most of their matches on the Challengers/ITF tournaments > $10K, winning 68.75% of matches (W/L 22/10). 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 4 times before with Ryan Harrison winning 1 times and Stefan Kozlov being victorious 3 times. They have played 10 sets in total, with Ryan Harrison winning 4 and Stefan Kozlov winning 6.
- The last match between Ryan Harrison and Stefan Kozlov was at the Cleveland Challenger, 02-02-2023, Round: R2, Surface: I.hard, with Stefan Kozlov getting the victory 6-4 6-4.
- Head to head match duration: In past head to head matches, the average match time between these players has been 2:7:4.
- Opponent quality stats: Over the last 12 months, Ryan Harrison has played against opponents with an average rank of 0 while Stefan Kozlov has played against players with an average rank of 415.3.
- Deciding set performance vs all players: If you are interested in live predictions and betting, if this match goes into a deciding set, Ryan Harrison has won 0% of deciding sets over the last 12 months, while Stefan Kozlov has won 65% in all matches played on tour.
- Break point conversion: In recent form, Ryan Harrison has converted 0% of breakpoint opportunities, and Stefan Kozlov has converted 44.59% of their chances to break their opponents serve. A telling stat for in-game live betting tips when either player has a breakpoint opportunity.
Ryan Harrison vs Stefan Kozlov Editorial Preview By TennisTipster88.
R. Harrison vs S. Kozlov H2H Stats Used In Our Predictions
| Stats | ||
|---|---|---|
| 1 | H2H Matches Won | 3 |
| 4 | Sets Won | 6 |
| 43 | Games Won | 52 |
| 20 | Aces (Total) | 7 |
| 18 | Total Double Faults | 17 |
| 2:7:4 | Average Match Time | 2:7:4 |
| 58% (186/322) | 1st Serve % | 57% (176/310) |
| 63% (117/186) | 1st Serve Win % | 66% (117/176) |
| 49% (66/136) | 2nd Serve Win % | 56% (75/134) |
| 41% (11/27) | Break Pts Won % | 39% (15/38) |
| 38% (118/310) | Return Points Win % | 43% (139/322) |
| 25% (1/4) | Best‑of‑3 Win % | 75% (3/4) |
| 0% (0/2) | Deciding Set Win % | 100% (2/2) |
| 50% (1/2) | 1st Set Won, Won Match | 100% (2/2) |
| 50% (1/2) | 1st Set Won, Lost Match | 0% (0/2) |
| 0% (0/2) | 1st Set Lost, Won Match | 50% (1/2) |
Recent Performance Stats
2nd Serve Win %: Harrison 0%, Kozlov 49%.
Opp 2nd Serve Pts Won: Harrison 0%, Kozlov 54%.
Break Points Saved %: Harrison 0%, Kozlov 58%.
R. Harrison Recent Matches Played
| OPPONENT | RESULT | SCORE | H2H | |
|---|---|---|---|---|
| Cary 1 Challenger - 07-08-2023 | ||||
Q3  Blake EllisB. Ellis | L | 6-3 3-6 6-4 | ||
Q1  Nicolas MejiaN. Mejia | W | 6-3 6-4 | ||
| Citi Open - Washington - 31-07-2023 | ||||
Q1 Zachary SvajdaZ. Svajda | L | 6-3 7-6(3) | ||
| Tallahassee Challenger - 17-04-2023 | ||||
Q1 Kaylan BigunK. Bigun | W | 6-2 7-6(1) | ||
Q3 Strong KirchheimerS. Kirchheimer | L | 6-2 4-4 ret. | ||
S. Kozlov Recent Matches Played
| OPPONENT | RESULT | SCORE | H2H | |
|---|---|---|---|---|
| Bogota Challenger - 24-11-2025 | ||||
QF Juan Sebastian GomezJ. Sebastian | L | 4-6 6-4 7-5 | ||
R2  David Jorda SanchisD. Jorda | W | 6-4 6-4 | ||
R1  Juan Bautista TorresJ. Bautista | W | 6-0 4-6 6-3 | ||
| Champaign Challenger - 10-11-2025 | ||||
F Murphy CassoneM. Cassone | W | 7-6(3) 7-5 | ||
SF  Cedrik-Marcel StebeC. Stebe | W | 6-0 4-0 ret. | ||
R. Harrison vs S. Kozlov Stats Breakdown Vs All H2H Opponents
| Stats | ||
|---|---|---|
| 53.45% (356/310) | YTD Win/Loss | 57.10% (346/260) |
| 51.95% (839/776) | Sets Win/Loss | 54.30% (776/653) |
| 50.66% (8062/7851) | Games Win/Loss | 51.63% (6862/6430) |
| 55.62% (203/162) | Hard Win/Loss | 55.33% (166/134) |
| 50.41% (62/61) | Clay Win/Loss | 59.40% (79/54) |
| 55.45% (61/49) | Indoor Hard W/L | 64.18% (86/48) |
| 44.12% (30/38) | Grass Win/Loss | 38.46% (15/24) |
| 0.49 | Aces Per Game | 0.22 |
| 3826 | Aces Total | 1458 |
| 0.24 | Double Faults Per Game | 0.33 |
| 1873 | Total Double Faults | 2125 |
| 1:23:26 | Average Match Time | 1:35:24 |
| 594.6 | Average Opponent Rank | 565.15 |
| 60% (26656/44441) | 1st Serve % | 61% (23211/37961) |
| 72% (19135/26656) | 1st Serve Win % | 66% (15381/23211) |
| 51% (9079/17785) | 2nd Serve Win % | 48% (7129/14750) |
| 40% (1424/3562) | Break Points Won % (Total) | 42% (1809/4280) |
| 36% (15777/43233) | Return Points Win % | 42% (16044/38519) |
| 44.74% (34/42) | Slam W/L | 31.03% (9/20) |
| 43.68% (38/49) | Masters W/L | 23.53% (4/13) |
| 50.00% (2/2) | Cups W/L | 0% (0/0) |
| 55.42% (138/111) | Main Tour W/L | 38.81% (26/41) |
| 54.46% (110/92) | Challenger W/L | 58.69% (206/145) |
| 72.34% (34/13) | Futures W/L | 71.13% (101/41) |
| 55% (332/601) | Best of 3 Sets Win % | 57% (338/588) |
| 34% (17/50) | Best of 5 Sets Win % | 45% (5/11) |
| 48% (136/282) | Tiebreaks Win % (Total) | 48% (70/146) |
| 55% (127/229) | Deciding Set Win % | 61% (130/212) |
| 85% (324/276) | 1st Set Won, Won Match | 87% (319/278) |
| 14% (324/45) | 1st Set Won, Lost Match | 12% (319/39) |
| 23% (342/78) | 1st Set Lost, Won Match | 24% (287/68) |
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