Mario Mansilla Diez vs Stefan KozlovPrediction, Head-to-Head Results, and Stats
Mario Mansilla Diez and Stefan Kozlov have met 1 time since 2026; Stefan Kozlov leads 1–0. Across all meetings Diez has taken 0 sets to Kozlov's 2. Their most recent meeting: Stefan Kozlov won at Copa Faulconbridge (2026).
Spread & Straight-Sets Form
Completed best-of-3 matches · Last 12 months
| Indicator | Mansilla Diez | Kozlov | ||
|---|---|---|---|---|
| Indicator | Mario Mansilla Diez | Stefan Kozlov | ||
| Wins in straight sets | 67% | 2/3 | 55% | 16/29 |
| Wins a set when losing | 0% | 0/4 | 48% | 13/27 |
| Goes to a deciding set | 14% | 1/7 | 46% | 26/56 |
| Covers −1.5 sets as favorite | 67% | 2/3 | 42% | 13/31 |
| Covers +1.5 sets as underdog | 25% | 1/4 | 68% | 15/22 |
| Tiebreak sets won | 50% | 1/2 | 41% | 7/17 |
| Wins after taking set 1 | 100% | 3/3 | 87% | 27/31 |
| Wins 2-0 after taking set 1 | 67% | 2/3 | 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. Small sample — read with care. Head-to-head: 1 of 1 completed meetings ended in straight sets (Mansilla Diez 0, Kozlov 1).
Style Matchup
Playing styles and historical archetype record
Diez
⚔️ The Gladiator
Kozlov
🪃 Counterpuncher
Matchup analysis
The 🪃 Counterpuncher archetype wins about 53% vs ⚔️ The Gladiator across 2,464 matches in our dataset: a stylistic lean toward Stefan Kozlov.
Counterpuncher players often use elite bp conversion and strong return game to pressure the the gladiator's physical intensity.
Previous meetings
1 career meeting, newest first
May 11, 2026
Copa Faulconbridge
C Clay · 1st Round Qualifying
Player ROI
Hypothetical if you put 1u on each player to win every one of their matches · Last 90 days
| Metric | Diez | Kozlov |
|---|---|---|
| W-L | 2–1 | 2–7 |
| Avg odds | 1.88 | 2.20 |
| ROI % | +41.0% | -60.9% |
| Units P/L | +1.23u | -5.48u |
Small sample: ROI stabilizes with more matches; fewer than 10 in the window is noisy.
Travel
Last 30 days
| Metric | Diez | 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
Across 1 shared opponent, both Diez and Kozlov posted a 0% win rate.
| Opponent | Diez | Kozlov |
|---|---|---|
| Alejo Sanchez Quilez | L 67 16 | L 57 46 |
Recent Form
Last five matches per player
Jose Dominguez Alonso
M25 Oviedo · 1st Round
Aug 25
Sergio Planella Hernandez
M25 Oviedo · 3rd Round Qualifying
Aug 24
Atharva Sharma
M25 Oviedo · 1st Round Qualifying
Aug 23
Stefan Kozlov
Copa Faulconbridge · 1st Round Qualifying
May 11
Buvaysar Gadamauri
ITC Crete Challenger · 1st Round Qualifying
Mar 1
Alejo Sanchez Quilez
Tenerife Challenger 1 · 2nd Round Qualifying
Feb 2
Daniil Golubev
Tenerife Challenger 1 · 1st Round Qualifying
Feb 1
Jonas Forejtek
Seville · 1st Round Qualifying
Aug 31
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 · 7–56 matches
| Metric | Diez | Kozlov |
|---|---|---|
| Matches won | 43% | 52% |
| Sets won | 40% | 51% |
| Games won | 46% | 51% |
Record by tier
Head-to-head record by tournament tier
| Stage | Diez | Kozlov |
|---|---|---|
| ATP Challenger Tour | 0 | 1 |
By surface
Head-to-head record per surface
| Surface | Diez | Kozlov |
|---|---|---|
| Clay | 0 | 1 |
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