Leo Vithoontien vs Stefan KozlovPrediction, Head-to-Head Results, and Stats
Leo Vithoontien and Stefan Kozlov have met 1 time since 2026; Stefan Kozlov leads 1–0. Across all meetings Vithoontien has taken 1 sets to Kozlov's 2. Their most recent meeting: Stefan Kozlov won at Bloomfield Hills Challenger (2026).
Spread & Straight-Sets Form
Completed best-of-3 matches · Last 12 months
| Indicator | Vithoontien | Kozlov | ||
|---|---|---|---|---|
| Indicator | Leo Vithoontien | Stefan Kozlov | ||
| Wins in straight sets | 68% | 15/22 | 55% | 16/29 |
| Wins a set when losing | 20% | 5/25 | 48% | 13/27 |
| Goes to a deciding set | 26% | 12/47 | 46% | 26/56 |
| Covers −1.5 sets as favorite | 60% | 9/15 | 42% | 13/31 |
| Covers +1.5 sets as underdog | 37% | 11/30 | 68% | 15/22 |
| Tiebreak sets won | 25% | 3/12 | 41% | 7/17 |
| Wins after taking set 1 | 90% | 19/21 | 87% | 27/31 |
| Wins 2-0 after taking set 1 | 71% | 15/21 | 52% | 16/31 |
Colored rows are higher-is-better: green above 50%, red below. Favorite/underdog set by book odds; cover rows count only matches with odds on record. Head-to-head: 0 of 1 completed meetings ended in straight sets (Vithoontien 0, Kozlov 0).
Style Matchup
Playing styles and historical archetype record
Vithoontien
🎾 All-Court
Kozlov
🪃 Counterpuncher
Matchup analysis
🎾 All-Court vs 🪃 Counterpuncher is historically tight (51% vs 49%, 878 matches). Neither style has a clear edge, so form, surface, and the head-to-head matter most.
Previous meetings
1 career meeting, newest first
Jul 19, 2026
Bloomfield Hills Challenger
H Hard · 1st Round Qualifying
Prop Research
Hit rates on common betting markets · Last 90 days
| Outcome | Vithoontien | Kozlov | ||
|---|---|---|---|---|
| Outcome | Leo Vithoontien | Stefan Kozlov | ||
| 1 or more | 100% | 4/4 | 71% | 5/7 |
| 3 or more | 25% | 1/4 | 29% | 2/7 |
| 5 or more | 25% | 1/4 | 0% | 0/7 |
| 10 or more | 0% | 0/4 | 0% | 0/7 |
| 15 or more | 0% | 0/4 | 0% | 0/7 |
| 20 or more | 0% | 0/4 | 0% | 0/7 |
Player ROI
Hypothetical if you put 1u on each player to win every one of their matches · Last 90 days
| Metric | Vithoontien | Kozlov |
|---|---|---|
| W-L | 1–4 | 2–7 |
| Avg odds | 2.96 | 2.20 |
| ROI % | -74.6% | -60.9% |
| Units P/L | -3.73u | -5.48u |
Small sample: ROI stabilizes with more matches; fewer than 10 in the window is noisy.
Travel
Last 30 days
| Metric | Vithoontien | Kozlov |
|---|---|---|
| Countries | — | 1 |
| Events | — | 3 |
| Matches | — | 4 |
| Distance | — | 2,418 mi · 3,891 km |
| Route | — | USA |
Host country from each tournament in the last 30 days, including the current event even when a player arrived on a bye. Route is the order of countries visited; consecutive stops in the same country are shown once. Distance is the great-circle total between host cities, shown only when every stop in the window is geocoded. A rough fatigue signal, not a headline stat.
Common opponents
Results vs. opponents both players faced · Last 12 months
Kozlov has a higher win rate against shared opponents (100% vs Vithoontien's 0%).
| Opponent | Vithoontien | Kozlov |
|---|---|---|
| Marc Polmans | L 36 36 | W 61 36 64 |
Recent Form
Last five matches per player
Tyler Bowers
M25 East Lansing · 1st Round
Aug 12
Cruz Hewitt
M25 Southaven · 2nd Round
Aug 6
Jon Gamble
M25 Southaven · 1st Round
Aug 5
Ilija Palavestra
M25 Edwardsville · 1st Round
Jul 29
Stefan Kozlov
Bloomfield Hills Challenger · 1st Round Qualifying
Jul 19
Cesar Bouchelaghem
Granby Challenger · 1st Round Qualifying
Jul 12
Naoki Nakagawa
M15 Tokyo · 1st Round
Jun 16
Hikaru Shiraishi
M15 Tokyo · 1st Round
Jun 10
Mitchell Krueger
Columbus Challenger · 2nd Round
Oct 1
James Kent Trotter
Columbus Challenger · 1st Round
Sep 29
Colton Smith
San Diego 2 Challenger · 1st Round
Sep 22
Darwin Blanch
Tiburon Challenger · 1st Round
Sep 15
Harry Wendelken
Brownsburg Challenger · 2nd Round
Aug 13
Aidan Mayo
Brownsburg Challenger · 1st Round
Aug 12
Zachary Svajda
Citi Open - Washington · 1st Round Qualifying
Jul 25
Alan Magadan
Bloomfield Hills Challenger · 1st Round
Jul 21
Win rate
Matches, sets and games won · Last 12 months · 47–56 matches
| Metric | Vithoontien | Kozlov |
|---|---|---|
| Matches won | 47% | 52% |
| Sets won | 46% | 51% |
| Games won | 49% | 51% |
Record by tier
Head-to-head record by tournament tier
| Stage | Vithoontien | Kozlov |
|---|---|---|
| ATP Challenger Tour | 0 | 1 |
By surface
Head-to-head record per surface
| Surface | Vithoontien | Kozlov |
|---|---|---|
| Hard | 0 | 1 |
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