Stefan Kozlov
Updated
- Rating6636.16
- ATP rank#299
- Last 103-7
- Last 301-1
- Current streak1 Loss
Recent match previews
- 2026-10-30: vs Max Hans Rehberg, ATP Sioux Falls (USA)
Match effects, last 365 days
| Date | Opponent | Opp Rank | Opp Rating | Score | Result | Effect | % of Ranking | Tour | Tournament | Note |
|---|---|---|---|---|---|---|---|---|---|---|
| 29.10.2026 | Max Hans Rehberg | 251 | 6675.46 | 7-5, 6-4 | Loss | -110.70 | 145.45% | ATP SINGLES / 29.10.2026 | USA Sioux Falls | |
| 27.10.2026 | Murphy Cassone | 238 | 6687.27 | 4-6, 6-3, 3-0 | Win | 129.57 | 206.88% | ATP SINGLES / 27.10.2026 | USA Sioux Falls | |
| 01.10.2026 | Mitchell Krueger | 311 | 6627.34 | 6-2, 3-6, 6-3 | Loss | -0.64 | 143.29% | ATP SINGLES / 01.10.2026 | USA Columbus | |
| 29.09.2026 | James Trotter | 446 | 6539.50 | 6-3, 6-2 | Win | 105.83 | 153.92% | ATP SINGLES / 29.09.2026 | USA Columbus | |
| 22.09.2026 | Colton Smith | 199 | 6713.77 | 6-4, 6-2 | Loss | -97.40 | 72.92% | ATP SINGLES / 22.09.2026 | USA San Diego | |
| 16.09.2026 | Darwin Blanch | 170 | 6733.13 | 6-3, 2-6, 7-6 | Loss | 130.97 | 174.07% | ATP SINGLES / 16.09.2026 | USA Tiburon | |
| 13.08.2026 | Harry Wendelken | 247 | 6682.20 | 2-6, 6-4, 6-1 | Loss | 92.40 | 98.25% | ATP SINGLES / 13.08.2026 | USA Brownsburg | |
| 12.08.2026 | Aidan Mayo | 281 | 6650.06 | 6-3, 5-7, 6-2 | Win | 112.72 | 150.67% | ATP SINGLES / 12.08.2026 | USA Brownsburg | |
| 25.07.2026 | Zachary Svajda | 68 | 6865.97 | 7-5, 6-1 | Loss | 64.81 | 46.29% | ATP SINGLES / 25.07.2026 | USA Washington | |
| 21.07.2026 | Alan Magadan | 592 | 6469.67 | 3-6, 6-1, 7-6 | Loss | -124.96 | 97.26% | ATP SINGLES / 21.07.2026 | USA Bloomfield Hills | |
| 20.07.2026 | Roger Pascual Ferra | 467 | 6531.49 | 6-4, 6-4 | Loss | -254.67 | 59.39% | ATP SINGLES / 20.07.2026 | USA Bloomfield Hills | |
| 19.07.2026 | Leo Vithoontien | 1045 | 6328.19 | 4-6, 6-1, 6-2 | Win | -114.49 | 117.88% | ATP SINGLES / 19.07.2026 | USA Bloomfield Hills | |
| 17.07.2026 | Alen Mujakic | 926 | 6356.70 | 7-6, 4-6, 1-0 | Loss | -229.47 | 87.06% | ATP SINGLES / 17.07.2026 | Germany German 2. Bundesliga | |
| 14.07.2026 | Yi Zhou | 231 | 6689.21 | 6-3, 3-6, 6-4 | Loss | 48.43 | 92.16% | ATP SINGLES / 14.07.2026 | Spain Pozoblanco | |
| 12.07.2026 | Tommaso Compagnucci | 408 | 6556.33 | 7-5, 7-6 | Loss | -175.28 | 76.79% | ATP SINGLES / 12.07.2026 | Germany German 2. Bundesliga | |
| 09.07.2026 | Jacob Fearnley | 89 | 6838.47 | 3-6, 6-3, 6-2 | Loss | 210.48 | 75.03% | ATP SINGLES / 09.07.2026 | USA New Port | |
| 09.07.2026 | Yibing Wu | 119 | 6798.56 | 6-4, 2-6, 6-4 | Win | 258.83 | 95.50% | ATP SINGLES / 09.07.2026 | USA New Port | |
| 07.07.2026 | Garrett Johns | 512 | 6509.42 | 6-4, 6-2 | Win | 60.75 | 80.60% | ATP SINGLES / 07.07.2026 | USA New Port | |
| 05.07.2026 | Aidan Mayo | 281 | 6650.06 | 7-6, 5-7, 6-3 | Win | 50.96 | 112.44% | ATP SINGLES / 05.07.2026 | USA New Port | |
| 12.05.2026 | Alejo Sanchez Quilez | 303 | 6635.01 | 7-5, 6-4 | Loss | -151.15 | 39.27% | ATP SINGLES / 12.05.2026 | Spain Valencia | |
| 11.05.2026 | Mario Mansilla Diez | 3272 | 5947.30 | 6-2, 6-1 | Win | 0.00 | 51.96% | ATP SINGLES / 11.05.2026 | Spain Valencia | |
| 25.04.2026 | Egor Gorin | 3907 | 5843.52 | 3-6, 6-3, 0-1 | Win | -733.65 | 38.28% | ATP SINGLES / 25.04.2026 | Contraband Open | |
| 22.04.2026 | Nick Hardt | 349 | 6601.51 | 6-2, 2-6, 6-0 | Loss | 77.85 | 29.93% | ATP SINGLES / 22.04.2026 | USA Savannah | |
| 20.04.2026 | Daniil Glinka | 222 | 6697.92 | 6-2, 6-3 | Win | 264.25 | 44.20% | ATP SINGLES / 20.04.2026 | USA Savannah | |
| 14.04.2026 | Alex Rybakov | 448 | 6539.33 | 7-6, 6-2 | Loss | -190.58 | 28.14% | ATP SINGLES / 14.04.2026 | USA Tallahassee | |
| 13.04.2026 | Kilian Feldbausch | 204 | 6708.62 | 6-1, 4-6, 7-6 | Win | 143.71 | 55.84% | ATP SINGLES / 13.04.2026 | USA Tallahassee | |
| 12.04.2026 | Strong Kirchheimer | 701 | 6425.78 | 6-0, 6-4 | Win | -10.39 | 41.56% | ATP SINGLES / 12.04.2026 | USA Tallahassee | |
| 09.04.2026 | James Duckworth | 102 | 6828.09 | 6-3, 6-2 | Loss | -6.07 | 16.92% | ATP SINGLES / 09.04.2026 | Mexico Mexico City | |
| 07.04.2026 | Raphael Perot | 423 | 6549.80 | 6-3, 6-1 | Win | 123.63 | 39.99% | ATP SINGLES / 07.04.2026 | Mexico Mexico City | |
| 01.04.2026 | Alan Magadan | 592 | 6469.67 | 6-3, 7-6 | Loss | -259.83 | 28.64% | ATP SINGLES / 01.04.2026 | Mexico San Luis Potosi | |
| 24.03.2026 | Andres Martin | 415 | 6552.15 | 6-2, 6-2 | Loss | -309.01 | 11.97% | ATP SINGLES / 24.03.2026 | Mexico Morelia | |
| 19.03.2026 | Michael Mmoh | 179 | 6727.01 | 7-5, 6-2 | Loss | -80.58 | 20.15% | ATP SINGLES / 19.03.2026 | Mexico Morelos | |
| 17.03.2026 | Alan Magadan | 592 | 6469.67 | 6-4, 6-4 | Win | -16.49 | 34.02% | ATP SINGLES / 17.03.2026 | Mexico Morelos | |
| 11.03.2026 | Jay Dylan Hara Friend | 298 | 6636.88 | 6-2, 4-6, 6-3 | Loss | -7.47 | 29.78% | ATP SINGLES / 11.03.2026 | USA Phoenix | |
| 10.03.2026 | Marc Polmans | 353 | 6598.48 | 6-1, 3-6, 6-4 | Win | 82.32 | 40.29% | ATP SINGLES / 10.03.2026 | USA Phoenix | |
| 09.03.2026 | Nathan Ponwith | 2089 | 6117.03 | 7-5, 6-4 | Win | -369.13 | 31.99% | ATP SINGLES / 09.03.2026 | USA Phoenix | |
| 09.03.2026 | Alafia Ayeni | 814 | 6391.01 | 6-4, 6-3 | Win | -80.16 | 31.99% | ATP SINGLES / 09.03.2026 | “XXXI Los Lagos ABP OPEN 2026” $ 700,000 MN-35, 000 USD + H + 2 Alimentos diarios a 32 jugadores elegidos por la organizacion. Presentado por ABP Seguros. | |
| 22.02.2026 | Patrick Kypson | 105 | 6823.91 | 7-6, 6-0 | Loss | 137.75 | 14.25% | ATP SINGLES / 22.02.2026 | Mexico Acapulco | |
| 20.02.2026 | Rodrigo Pacheco Mendez | 264 | 6665.37 | 6-4, 6-2 | Loss | -145.79 | 14.03% | ATP SINGLES / 20.02.2026 | Mexico Metepec | |
| 18.02.2026 | Karl Poling | 540 | 6492.14 | 6-4, 7-6 | Win | -44.02 | 27.63% | ATP SINGLES / 18.02.2026 | Mexico Metepec | |
| 16.02.2026 | Tristan Mccormick | 855 | 6380.88 | 6-3, 6-7, 6-4 | Win | -161.95 | 40.82% | ATP SINGLES / 16.02.2026 | Mexico Metepec | |
| 06.02.2026 | Keegan Smith | 301 | 6635.68 | 6-3, 6-2 | Loss | -198.49 | 10.50% | ATP SINGLES / 06.02.2026 | USA Cleveland | |
| 04.02.2026 | Raphael Perot | 423 | 6549.80 | 7-6, 3-6, 6-3 | Win | -30.37 | 31.01% | ATP SINGLES / 04.02.2026 | USA Cleveland | |
| 02.02.2026 | Cedrik Marcel Stebe | 483 | 6522.76 | 3-6, 6-2, 6-3 | Win | 12.60 | 30.54% | ATP SINGLES / 02.02.2026 | USA Cleveland | |
| 28.01.2026 | Sho Shimabukuro | 135 | 6774.90 | 6-2, 4-6, 7-6 | Loss | 149.45 | 27.42% | ATP SINGLES / 28.01.2026 | USA San Diego | |
| 22.01.2026 | Francesco Passaro | 162 | 6744.55 | 6-3, 1-6, 6-1 | Loss | 174.39 | 18.70% | ATP SINGLES / 22.01.2026 | Portugal Oeiras | |
| 20.01.2026 | Alexis Galarneau | 196 | 6716.75 | 7-6, 2-6, 6-1 | Win | 172.73 | 25.79% | ATP SINGLES / 20.01.2026 | Portugal Oeiras | |
| 19.01.2026 | Mikhail Kukushkin | 237 | 6687.40 | 6-4, 6-2 | Win | 238.74 | 21.93% | ATP SINGLES / 19.01.2026 | Portugal Oeiras | |
| 18.01.2026 | Robert Strombachs | 648 | 6446.20 | 6-3, 5-0 | Win | 17.30 | 19.95% | ATP SINGLES / 18.01.2026 | Portugal Oeiras | |
| 13.01.2026 | Harry Wendelken | 247 | 6682.20 | 6-1, 3-6, 6-4 | Loss | 67.85 | 19.20% | ATP SINGLES / 13.01.2026 | United Kingdom Glasgow | |
| 08.01.2026 | Toby Samuel | 106 | 6823.41 | 7-6, 6-4 | Loss | 97.24 | 16.79% | ATP SINGLES / 08.01.2026 | United Kingdom Nottingham | |
| 07.01.2026 | Mathys Erhard | 358 | 6596.02 | 6-2, 6-4 | Win | 147.36 | 20.00% | ATP SINGLES / 07.01.2026 | United Kingdom Nottingham | |
| 06.01.2026 | Tyler Zink | 409 | 6554.87 | 6-4, 6-1 | Win | 113.71 | 19.84% | ATP SINGLES / 06.01.2026 | United Kingdom Nottingham | |
| 28.11.2025 | Juan Sebastian Gomez | 1151 | 6301.25 | 4-6, 6-4, 7-5 | Loss | -364.91 | 18.37% | ATP SINGLES / 28.11.2025 | Colombia Bogota | |
| 27.11.2025 | David Jorda Sanchis | 279 | 6652.55 | 6-4, 6-4 | Win | 166.38 | 14.58% | ATP SINGLES / 27.11.2025 | Colombia Bogota | |
| 25.11.2025 | Juan Bautista Torres | 337 | 6609.77 | 6-0, 4-6, 6-3 | Win | 97.36 | 19.14% | ATP SINGLES / 25.11.2025 | Colombia Bogota | |
| 16.11.2025 | Murphy Cassone | 238 | 6687.27 | 7-6, 7-5 | Win | 151.11 | 13.40% | ATP SINGLES / 16.11.2025 | USA Champaign | |
| 15.11.2025 | Darwin Blanch | 170 | 6733.13 | 6-2, 6-7, 6-3 | Win | 215.30 | 19.94% | ATP SINGLES / 15.11.2025 | USA Champaign | |
| 15.11.2025 | Cedrik Marcel Stebe | 483 | 6522.76 | 6-0, 4-0 | Win | 126.60 | 11.08% | ATP SINGLES / 15.11.2025 | USA Champaign | |
| 13.11.2025 | Tyler Zink | 409 | 6554.87 | 6-3, 6-3 | Win | 98.71 | 13.09% | ATP SINGLES / 13.11.2025 | USA Champaign | |
| 11.11.2025 | Leo Borg | 818 | 6389.88 | 6-1, 6-0 | Win | 1.86 | 12.89% | ATP SINGLES / 11.11.2025 | USA Champaign |