Stefan Kozlov
S. Kozlov · USA
Every match we have on file, with the price the market gave them at the time.
Last five
LWLWL
2026 record
24-25
Hard 16-20 · Clay 5-4 · Grass 3-1
Average price
2.08
Match history
| Date | Event | Opponent | Score | Their price | Market | Result |
|---|---|---|---|---|---|---|
| 2026-10-28 | Sioux Falls | M. H. Rehberg | 2.51 | 62% | LOST | |
Games in each set5-7 4-6 KozlovRehbergPoints won46%54%Serve points won59%62%Return points won38%41%Games held8 of 1110 of 11Break points saved5 of 810 of 11Aces18Double faults23 | ||||||
| 2026-10-26 | Sioux Falls | M. Cassone | RET | 2.53 | 62% | WON |
Games in each set4-6 6-3 3-0 KozlovCassonePoints won54%46%Serve points won66%55%Return points won45%34%Games held8 of 116 of 11Break points saved1 of 43 of 8Aces24Double faults34 | ||||||
| 2026-10-01 | Columbus | M. Krueger | 1.81 | 51% | LOST | |
Games in each set2-6 6-3 3-6 KozlovKruegerPoints won46%54%Serve points won51%60%Return points won40%49%Games held7 of 139 of 13Break points saved9 of 156 of 10Aces49Double faults73 | ||||||
| 2026-09-29 | Columbus | J. K. Trotter | — | — | WON | |
Games in each set6-3 6-2 KozlovTrotterPoints won56%44%Serve points won65%53%Return points won47%35%Games held8 of 94 of 8Break points saved0 of 11 of 5Aces04Double faults14 | ||||||
| 2026-09-21 | San Diego 2 (Usa) - Qualification | C. Smith | 3.20 | 71% | LOST | |
Games in each set4-6 2-6 KozlovSmithPoints won40%60%Serve points won51%73%Return points won27%49%Games held5 of 98 of 9Break points saved1 of 50 of 1Aces11Double faults22 | ||||||
| 2026-09-14 | Tiburon | Dar. Blanch | 2.62 | 65% | LOST | |
Games in each set3-6 6-2 6-7 KozlovBlanchPoints won49%51%Serve points won61%64%Return points won36%39%Games held11 of 1411 of 15Break points saved5 of 86 of 10Aces15Double faults27 | ||||||
| 2026-08-13 | Brownsburg (Usa) - Qualification | A. Mayo | 2.55 | 62% | WON | |
Games in each set6-3 5-7 6-2 KozlovMayoPoints won55%45%Serve points won73%64%Return points won36%27%Games held14 of 1511 of 14Break points saved3 of 44 of 7Aces03Double faults24 | ||||||
| 2026-08-13 | Brownsburg (Usa) - Qualification | H. Wendelken | 2.15 | 55% | LOST | |
Games in each set6-2 4-6 1-6 KozlovWendelkenPoints won47%53%Serve points won53%61%Return points won39%47%Games held4 of 107 of 10Break points saved8 of 141 of 4Aces15Double faults03 | ||||||
| 2026-07-25 | Washington | Z. Svajda | 4.55 | 80% | LOST | |
Games in each set5-7 1-6 KozlovSvajdaPoints won40%60%Serve points won45%66%Return points won34%55%Games held4 of 98 of 10Break points saved5 of 104 of 6Aces35Double faults23 | ||||||
| 2026-07-21 | Bloomfield Hills | A. Magadan | 1.50 | 65% | LOST | |
Games in each set6-3 1-6 6-7 KozlovMagadanPoints won47%53%Serve points won50%57%Return points won43%50%Games held9 of 1410 of 14Break points saved8 of 136 of 10Aces38Double faults37 | ||||||
| 2026-07-20 | Bloomfield Hills | R. Pascual Ferra | 1.45 | 66% | LOST | |
Games in each set4-6 4-6 KozlovFerraPoints won46%54%Serve points won57%65%Return points won35%43%Games held7 of 109 of 10Break points saved4 of 75 of 6Aces01Double faults42 | ||||||
| 2026-07-19 | Bloomfield Hills | L. Vithoontien | 1.09 | 87% | WON | |
Games in each set4-6 6-1 6-2 KozlovVithoontienPoints won56%44%Serve points won68%55%Return points won45%32%Games held12 of 138 of 12Break points saved3 of 47 of 11Aces12Double faults11 | ||||||
| 2026-07-14 | Pozoblanco | Y. Zhou | 2.32 | 59% | LOST | |
Games in each set3-6 6-3 4-6 KozlovZhouPoints won49%51%Serve points won58%57%Return points won43%42%Games held9 of 1410 of 14Break points saved5 of 106 of 10Aces33Double faults54 | ||||||
| 2026-07-10 | Newport | J. Fearnley | 4.45 | 78% | LOST | |
Games in each set6-3 3-6 2-6 KozlovFearnleyPoints won48%52%Serve points won51%56%Return points won44%49%Games held6 of 138 of 13Break points saved5 of 123 of 8Aces22Double faults26 | ||||||
| 2026-07-09 | Newport | Y. Wu | 4.49 | 78% | WON | |
Games in each set6-4 2-6 6-4 KozlovWuPoints won48%52%Serve points won54%57%Return points won43%46%Games held9 of 149 of 14Break points saved6 of 1112 of 17Aces34Double faults57 | ||||||
| 2026-07-07 | Newport | G. Johns | 1.45 | 66% | WON | |
Games in each set6-4 6-2 KozlovJohnsPoints won59%41%Serve points won69%49%Return points won51%31%Games held7 of 94 of 9Break points saved2 of 45 of 10Aces42Double faults33 | ||||||
| 2026-07-05 | Newport | A. Mayo | 2.07 | 54% | WON | |
Games in each set7-6 5-7 6-3 KozlovMayoPoints won51%49%Serve points won68%62%Return points won38%32%Games held13 of 1613 of 17Break points saved5 of 83 of 7Aces24Double faults55 | ||||||
| 2026-05-12 | Valencia | A. Sanchez Quilez | 2.19 | 56% | LOST | |
Games in each set5-7 4-6 KozlovQuilezPoints won45%55%Serve points won51%62%Return points won38%49%Games held7 of 119 of 11Break points saved1 of 51 of 3Aces01Double faults50 | ||||||
| 2026-05-11 | Valencia | M. Mansilla Diez | 1.06 | 92% | WON | |
Games in each set6-2 6-1 KozlovDiezPoints won62%38%Serve points won65%42%Return points won58%35%Games held7 of 82 of 7Aces10Double faults22 | ||||||
| 2026-04-22 | Savannah | N. Hardt | 1.84 | 53% | LOST | |
Games in each set2-6 6-2 0-6 KozlovHardtPoints won47%53%Serve points won46%53%Return points won47%54%Games held4 of 117 of 11Break points saved1 of 87 of 11Aces13Double faults35 | ||||||
| 2026-04-20 | Savannah | D. Glinka | 2.10 | 54% | WON | |
Games in each set6-2 6-3 KozlovGlinkaPoints won57%43%Serve points won58%44%Return points won56%42%Games held6 of 92 of 8Break points saved9 of 129 of 15Aces01Double faults14 | ||||||
| 2026-04-14 | Tallahassee | A. Rybakov | 1.63 | 59% | LOST | |
Games in each set6-7 2-6 KozlovRybakovPoints won46%54%Serve points won58%67%Return points won33%42%Games held6 of 108 of 10Aces00Double faults31 | ||||||
| 2026-04-13 | Tallahassee | K. Feldbausch | 2.36 | 59% | WON | |
Games in each set6-1 4-6 7-6 KozlovFeldbauschPoints won52%48%Serve points won58%57%Return points won43%42%Games held11 of 159 of 14Aces22Double faults06 | ||||||
| 2026-04-12 | Tallahassee | S. Kirchheimer | 1.20 | 80% | WON | |
Games in each set6-0 6-4 KozlovKirchheimerPoints won60%40%Serve points won70%47%Return points won53%30%Games held7 of 83 of 8Aces13Double faults26 | ||||||
| 2026-04-09 | Mexico City | J. Duckworth | 3.15 | 69% | LOST | |
Games in each set3-6 2-6 KozlovDuckworthPoints won42%58%Serve points won54%70%Return points won30%46%Games held5 of 89 of 9Aces12Double faults41 | ||||||
| 2026-04-07 | Mexico City | R. Perot | 1.66 | 58% | WON | |
Games in each set6-3 6-1 KozlovPerotPoints won62%38%Serve points won68%43%Return points won57%32%Games held7 of 83 of 8Aces50Double faults75 | ||||||
| 2026-04-01 | San Luis Potosi | A. Magadan | 1.17 | 83% | LOST | |
Games in each set3-6 6-7 KozlovMagadanPoints won49%51%Serve points won66%66%Return points won34%34%Games held8 of 1010 of 11Aces47Double faults05 | ||||||
| 2026-03-24 | Morelia | A. Martin | 1.55 | 63% | LOST | |
Games in each set2-6 2-6 KozlovMartinPoints won40%60%Serve points won50%71%Return points won29%50%Games held4 of 88 of 8Aces25Double faults11 | ||||||
| 2026-03-19 | Morelos | M. Mmoh | 2.90 | 67% | LOST | |
Games in each set5-7 2-6 KozlovMmohPoints won42%58%Serve points won43%59%Return points won41%57%Games held4 of 107 of 10Aces05Double faults18 | ||||||
| 2026-03-17 | Morelos | A. Magadan | 1.24 | 78% | WON | |
Games in each set6-4 6-4 KozlovMagadanPoints won55%45%Serve points won64%55%Return points won45%36%Games held8 of 106 of 10Aces74Double faults71 | ||||||
| 2026-03-11 | Phoenix | J. D. Hara Friend | 2.36 | 59% | LOST | |
Games in each set2-6 6-4 3-6 KozlovFriendPoints won47%53%Serve points won52%57%Return points won43%48%Games held7 of 1310 of 14Aces52Double faults64 | ||||||
| 2026-03-10 | Phoenix | M. Polmans | 1.50 | 64% | WON | |
Games in each set6-1 3-6 6-4 KozlovPolmansPoints won54%46%Serve points won65%59%Return points won41%35%Games held11 of 139 of 13Aces13Double faults27 | ||||||
| 2026-03-09 | Phoenix | N. Ponwith | 1.08 | 89% | WON | |
Games in each set7-5 6-4 KozlovPonwithPoints won54%46%Serve points won75%63%Return points won37%25%Games held11 of 119 of 11Aces24Double faults11 | ||||||
| 2026-02-22 | Acapulco | P. Kypson | 3.01 | 68% | LOST | |
Games in each set6-7 0-6 KozlovKypsonPoints won42%58%Serve points won52%71%Return points won29%48%Games held5 of 98 of 9Break points saved3 of 73 of 4Aces14Double faults41 | ||||||
| 2026-02-20 | Metepec | R. Pacheco Mendez | 1.83 | 53% | LOST | |
Games in each set4-6 2-6 KozlovMendezPoints won43%57%Serve points won56%68%Return points won32%44%Games held6 of 99 of 9Break points saved2 of 53 of 3Aces36Double faults52 | ||||||
| 2026-02-18 | Metepec | K. Poling | 1.16 | 82% | WON | |
Games in each set6-4 7-6 KozlovPolingPoints won53%47%Serve points won64%56%Return points won44%36%Games held8 of 117 of 11Break points saved3 of 64 of 8Aces50Double faults93 | ||||||
| 2026-02-16 | Metepec | T. McCormick | 1.16 | 83% | WON | |
Games in each set6-3 6-7 6-4 KozlovMcCormickPoints won52%48%Serve points won65%61%Return points won39%35%Games held14 of 1611 of 15Break points saved4 of 65 of 9Aces76Double faults76 | ||||||
| 2026-02-06 | Cleveland | K. Smith | 1.53 | 64% | LOST | |
Games in each set3-6 2-6 KozlovSmithPoints won42%58%Serve points won56%74%Return points won26%44%Games held5 of 89 of 9Break points saved10 of 133 of 3Aces08Double faults22 | ||||||
| 2026-02-04 | Cleveland | R. Perot | 1.38 | 70% | WON | |
Games in each set7-6 3-6 6-3 KozlovPerotPoints won53%47%Serve points won66%57%Return points won43%34%Games held11 of 1511 of 15Break points saved4 of 84 of 8Aces103Double faults53 | ||||||
| 2026-02-02 | Cleveland | C. Stebe | 1.37 | 70% | WON | |
Games in each set3-6 6-2 6-3 KozlovStebePoints won52%48%Serve points won64%61%Return points won39%36%Games held12 of 1310 of 13Break points saved8 of 94 of 7Aces22Double faults42 | ||||||
Backing and fading
48 matches with a price on fileEvery match where we recorded a price before play. A figure is only coloured when its 90% range excludes zero — otherwise the sample cannot tell the difference between an edge and a run of luck.
All matches
—
When favourite
—
When underdog
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After the first setAcross 73,803 matches on file, the player who drops the opening set wins 17% of the time.
Lost the opening set——Won the opening set——
Running total
Physical history
Retirements, walkovers and medical timeouts on file, newest first.
Challenger Hard (Indoor) won when M. Cassone retired v M. Cassone
Challenger Clay won when R. Strombachs retired v R. Strombachs
medical timeout 11 that season
last MTO 13.08.2026 · 11 MTOs in 2026 · score 6-3 2-6 0-0 ('00 - 00) ⌚️80 m · odds 1.8-1.95 / 1.77 +0.5 | -0.5 1.93 · Hard
medical timeout 10 that season
last MTO 13.08.2026 · 10 MTOs in 2026 · score 6-2 4-6 0-0 ('40 - 40) ⌚️114 m · odds 2.4-1.5 / 2.02 -0.5 | +0.5 1.7 · Hard
medical timeout 9 that season
last MTO 21.07.2026 · 9 MTOs in 2026 · score 6-3 5-7 2-1 ('00 - 00) ⌚️127 m · odds 1.45-2.5 / 1.67 -2.5 | +2.5 2.07 · Hard
medical timeout
last MTO 20.07.2026 · score 6-3 1-6 0-0 ('00 - 00) · odds 2.05-1.73
medical timeout
last MTO 10.07.2026 · score 2-1 (00 - 00') · odds x-x
medical timeout
last MTO 20.04.2026 · score 3-6 6-3 3-0 ('00 - 00) · odds 1.01-14.0
medical timeout
last MTO 09.04.2026 · score 2-6 1-1 (00 - 00') · odds 4.30-1.18
medical timeout
last MTO 18.03.2026 · score 2-1 (00 - 40') · odds 1.27-3.35
medical timeout
last MTO 11.03.2026 · score 6-4 3-4 ('00 - 00) · odds 1.11-5.50
medical timeout
last MTO 13.01.2026 · score 1-2 (00 - 00') · odds 1.70-2.02
medical timeout
last MTO 15.11.2025 · score 6-1 3-6 2-1 (00 - 00') · odds 1.63-2.20
medical timeout
last MTO 08.07.2025 · score 1-0 (00 - 00') · odds 1.47-2.55