Jan Kumstat
Updated
- Rating6653.20
- ATP rank#278
- Last 106-4
- Last 301-3
- Current streak3 Losses
Recent match previews
- 2026-10-18: vs Michael Mmoh, ATP Lyon (X) (France)
- 2026-10-15: vs Jacob Fearnley, ATP Olbia (X) (Italy)
- 2026-10-13: vs Edas Butvilas, ATP Olbia (X) (Italy)
Match effects, last 365 days
| Date | Opponent | Opp Rank | Opp Rating | Score | Result | Effect | % of Ranking | Tour | Tournament | Note |
|---|---|---|---|---|---|---|---|---|---|---|
| 27.10.2026 | Sho Shimabukuro | 135 | 6774.90 | 6-4, 6-0 | Loss | -28.30 | 63.66% | ATP SINGLES / 27.10.2026 | South Korea Soul | |
| 18.10.2026 | Michael Mmoh | 179 | 6727.01 | 6-1, 6-7, 6-3 | Loss | 25.81 | 148.48% | ATP SINGLES / 18.10.2026 | France Lyon | |
| 15.10.2026 | Jacob Fearnley | 89 | 6838.47 | 6-4, 6-3 | Loss | 22.41 | 101.56% | ATP SINGLES / 15.10.2026 | Italy Olbia | |
| 13.10.2026 | Edas Butvilas | 168 | 6735.50 | 7-6, 7-6 | Win | 132.30 | 171.45% | ATP SINGLES / 13.10.2026 | Italy Olbia | |
| 31.08.2026 | Juan Pablo Varillas | 283 | 6648.26 | 6-4, 6-3 | Loss | -167.79 | 71.82% | ATP SINGLES / 31.08.2026 | Italy Como | |
| 22.08.2026 | Chun Hsin Tseng | 192 | 6718.41 | 5-7, 6-3, 6-0 | Win | 172.86 | 162.73% | ATP SINGLES / 22.08.2026 | Czech Republic Praha | |
| 21.08.2026 | Filip Cristian Jianu | 360 | 6593.52 | 6-1, 6-4 | Win | 135.32 | 113.99% | ATP SINGLES / 21.08.2026 | Czech Republic Praha | |
| 20.08.2026 | Maxim Mrva | 220 | 6699.81 | 6-1, 7-5 | Win | 241.61 | 113.11% | ATP SINGLES / 20.08.2026 | ATP Challenger Prague | |
| 19.08.2026 | Sumit Nagal | 255 | 6669.96 | 7-5, 6-3 | Win | 181.77 | 112.25% | ATP SINGLES / 19.08.2026 | Czech Republic Praha | |
| 18.08.2026 | Petr Brunclik | 329 | 6615.55 | 7-5, 6-1 | Win | 157.36 | 111.39% | ATP SINGLES / 18.08.2026 | Czech Republic Praha | |
| 16.08.2026 | Marvin Moeller | 270 | 6661.25 | 4-6, 7-6, 7-5 | Win | 45.55 | 146.24% | ATP SINGLES / 16.08.2026 | Germany Hamburg | |
| 15.08.2026 | Matheus Pucinelli De Almeida | 249 | 6677.07 | 6-4, 5-7, 6-2 | Win | 112.10 | 154.19% | ATP SINGLES / 15.08.2026 | Germany Hamburg | |
| 14.08.2026 | Carlos Taberner | 269 | 6661.43 | 7-5 | Win | 158.23 | 54.00% | ATP SINGLES / 14.08.2026 | Germany Hamburg | |
| 13.08.2026 | Max Houkes | 331 | 6613.15 | 6-4, 7-6 | Win | 59.95 | 107.18% | ATP SINGLES / 13.08.2026 | Germany Hamburg | |
| 11.08.2026 | Jamie Mackenzie | 608 | 6464.87 | 6-7, 6-3, 6-3 | Win | -84.99 | 158.31% | ATP SINGLES / 11.08.2026 | Germany Hamburg | |
| 10.08.2026 | Tom Zeuch | 1012 | 6337.07 | 3-6, 7-6, 6-3 | Win | -260.13 | 130.91% | ATP SINGLES / 10.08.2026 | Germany Hamburg | |
| 09.08.2026 | Alan Wazny | 675 | 6437.94 | 6-2, 7-6 | Win | -77.76 | 103.93% | ATP SINGLES / 09.08.2026 | Germany Hamburg | |
| 02.08.2026 | Gonzalo Bueno | 268 | 6661.66 | 6-3, 6-1 | Win | 218.46 | 98.47% | ATP SINGLES / 02.08.2026 | Czech Republic Liberec | |
| 01.08.2026 | Sumit Nagal | 255 | 6669.96 | 7-5, 6-4 | Win | 166.77 | 97.72% | ATP SINGLES / 01.08.2026 | Czech Republic Liberec | |
| 31.07.2026 | Frederico Ferreira Silva | 225 | 6692.61 | 6-4, 7-5 | Win | 189.42 | 96.97% | ATP SINGLES / 31.07.2026 | Czech Republic Liberec | |
| 29.07.2026 | Thiago Seyboth Wild | 166 | 6738.20 | 6-4, 6-2 | Win | 272.50 | 95.48% | ATP SINGLES / 29.07.2026 | Czech Republic Liberec | |
| 27.07.2026 | Zdenek Kolar | 254 | 6671.77 | 7-6, 6-4 | Win | 118.57 | 94.02% | ATP SINGLES / 27.07.2026 | Czech Republic Liberec | |
| 24.07.2026 | Mathys Erhard | 358 | 6596.02 | 1-6, 7-6, 6-2 | Loss | -7.89 | 107.19% | ATP SINGLES / 24.07.2026 | Austria Ollersbach | |
| 22.07.2026 | Yuichiro Inui | 2282 | 6087.83 | 6-4, 6-2 | Win | -207.68 | 90.47% | ATP SINGLES / 22.07.2026 | Austria Ollersbach | |
| 18.07.2026 | Tom Gentzsch | 205 | 6708.49 | 7-5, 6-4 | Loss | -94.71 | 65.80% | ATP SINGLES / 18.07.2026 | Netherlands Bunschoten | |
| 17.07.2026 | Thijs Boogaard | 522 | 6500.62 | 6-1, 6-1 | Win | 87.43 | 87.06% | ATP SINGLES / 17.07.2026 | Netherlands Bunschoten | |
| 16.07.2026 | Florian Broska | 449 | 6538.73 | 6-7, 6-4, 6-4 | Win | -31.13 | 129.58% | ATP SINGLES / 16.07.2026 | Netherlands Bunschoten | |
| 14.07.2026 | Henri Squire | 214 | 6702.07 | 6-3, 6-1 | Win | 258.87 | 85.07% | ATP SINGLES / 14.07.2026 | Netherlands Bunschoten | |
| 13.07.2026 | Mateus Alves | 655 | 6444.02 | 6-3, 6-3 | Win | -29.18 | 84.41% | ATP SINGLES / 13.07.2026 | Netherlands Bunschoten | |
| 12.07.2026 | Leo Raquillet | 559 | 6479.34 | 7-6, 6-4 | Win | -73.85 | 83.77% | ATP SINGLES / 12.07.2026 | Netherlands Bunschoten | |
| 28.06.2026 | Pavel Lagutin | 404 | 6559.56 | 7-6, 6-2 | Loss | -187.38 | 50.14% | ATP SINGLES / 28.06.2026 | France Troyes | |
| 23.06.2026 | Duje Markovina | 1081 | 6318.89 | 6-1, 1-6, 6-3 | Loss | -211.72 | 60.30% | ATP SINGLES / 23.06.2026 | Croatia Zagreb | |
| 18.06.2026 | Kai Wehnelt | 401 | 6563.11 | 6-3, 6-2 | Loss | -288.09 | 29.01% | ATP SINGLES / 18.06.2026 | Switzerland Klosters | |
| 17.06.2026 | Corentin Denolly | 848 | 6382.41 | 6-4, 7-6 | Win | -170.78 | 69.10% | ATP SINGLES / 17.06.2026 | Switzerland Klosters | |
| 13.06.2026 | Georgii Kravchenko | 402 | 6562.13 | 3-6, 7-6, 6-2 | Loss | -67.49 | 78.17% | ATP SINGLES / 13.06.2026 | Czech Republic Ceska Lipa | |
| 12.06.2026 | Marvin Moeller | 270 | 6661.25 | 7-6, 6-4 | Win | 108.05 | 66.49% | ATP SINGLES / 12.06.2026 | Czech Republic Ceska Lipa | |
| 11.06.2026 | Jakub Filip | 812 | 6391.14 | 6-2, 6-1 | Win | 0.00 | 65.98% | ATP SINGLES / 11.06.2026 | Czech Republic Ceska Lipa | |
| 09.06.2026 | Matteo Covato | 1567 | 6205.94 | 6-4, 6-3 | Win | -282.26 | 64.97% | ATP SINGLES / 09.06.2026 | Czech Republic Ceska Lipa | |
| 02.06.2026 | Vitaliy Sachko | 183 | 6725.04 | 5-7, 6-0, 6-3 | Loss | 111.84 | 46.17% | ATP SINGLES / 02.06.2026 | Czech Republic Prost?jov | |
| 01.06.2026 | Oleg Prihodko | 502 | 6513.80 | 6-4, 6-7, 6-2 | Win | -31.07 | 91.63% | ATP SINGLES / 01.06.2026 | Czech Republic Prost?jov | |
| 31.05.2026 | Ji Sung Nam | 495 | 6517.21 | 6-4, 6-4 | Win | 14.01 | 60.62% | ATP SINGLES / 31.05.2026 | Czech Republic Prost?jov | |
| 01.04.2026 | Imanol Lopez Morillo | 578 | 6474.00 | 6-3, 5-5 | Loss | -359.20 | 9.55% | ATP SINGLES / 01.04.2026 | Greece Heraklion IV | |
| 30.03.2026 | Henry Searle | 294 | 6638.28 | 6-2, 6-2 | Loss | -239.91 | 12.53% | ATP SINGLES / 30.03.2026 | Greece Heraklion III | |
| 29.03.2026 | Miles Jones | 777 | 6402.37 | 6-4, 7-6 | Win | -150.82 | 37.31% | ATP SINGLES / 29.03.2026 | Greece Heraklion III | |
| 29.03.2026 | Luca Staeheli | 612 | 6462.71 | 6-1, 6-2 | Win | 42.01 | 37.31% | ATP SINGLES / 29.03.2026 | Greece Heraklion III | |
| 27.03.2026 | Thijs Boogaard | 522 | 6500.62 | 3-6, 7-5, 10-7 | Win | -108.57 | 45.93% | ATP SINGLES / 27.03.2026 | Greece Heraklion III | |
| 26.03.2026 | Andrea Colombo | 867 | 6377.17 | 7-6, 6-0 | Win | -113.01 | 36.46% | ATP SINGLES / 26.03.2026 | Greece Heraklion III | |
| 27.02.2026 | Harry Wendelken | 247 | 6682.20 | 6-7, 6-1, 6-2 | Loss | -14.33 | 22.21% | ATP SINGLES / 27.02.2026 | Poland Pszczyna | |
| 26.02.2026 | Brian Bozemoj | 1098 | 6314.82 | 6-4, 6-4 | Win | -188.38 | 29.39% | ATP SINGLES / 26.02.2026 | Poland Pszczyna | |
| 24.02.2026 | Szymon Karpinski | 2643 | 6038.08 | 6-7, 7-6, 7-5 | Win | -565.12 | 43.41% | ATP SINGLES / 24.02.2026 | Poland Pszczyna | |
| 17.02.2026 | Henry Bernet | 326 | 6617.07 | 6-2, 6-3 | Loss | -234.12 | 11.43% | ATP SINGLES / 17.02.2026 | Italy Trento | |
| 27.01.2026 | Nicolas Tepmahc | 790 | 6397.79 | 6-2, 1-0 | Loss | -480.40 | 3.89% | ATP SINGLES / 27.01.2026 | Tunisia Monastir | |
| 23.01.2026 | Dimitris Sakellaridis | 639 | 6450.21 | 6-2, 6-1 | Loss | -432.99 | 5.65% | ATP SINGLES / 23.01.2026 | Tunisia Monastir | |
| 23.01.2026 | Sergi Perez Contri | 480 | 6524.97 | 7-5, 6-1 | Win | 66.77 | 22.62% | ATP SINGLES / 23.01.2026 | Tunisia Monastir | |
| 22.01.2026 | Maxim Shin | 1563 | 6206.86 | 6-1, 6-4 | Win | -148.17 | 22.44% | ATP SINGLES / 22.01.2026 | Tunisia Monastir | |
| 17.12.2025 | Matej Vocel | 748 | 6412.19 | 5-7, 6-1, 6-2 | Win | -115.00 | 24.10% | ATP SINGLES / 17.12.2025 | Czech Republic Czech Extraliga | |
| 14.12.2025 | Radek Chodora | 1727 | 6175.51 | 6-3, 6-4 | Win | -312.69 | 16.62% | ATP SINGLES / 14.12.2025 | Czech Republic Czech Extraliga | |
| 27.11.2025 | Michael Geerts | 430 | 6548.32 | 7-6, 6-1 | Loss | -182.02 | 8.51% | ATP SINGLES / 27.11.2025 | Greece Athens I | |
| 25.11.2025 | Maks Kasnikowski | 215 | 6701.58 | 7-5, 4-6, 6-1 | Win | 157.13 | 19.14% | ATP SINGLES / 25.11.2025 | Greece Athens I | |
| 24.11.2025 | Andrin Casanova | 1309 | 6260.66 | 6-0, 6-1 | Win | 0.00 | 14.25% | ATP SINGLES / 24.11.2025 | Greece Athens I | |
| 11.11.2025 | Yannick Hanfmann | 61 | 6870.59 | 6-1, 6-3 | Loss | 22.39 | 4.30% | ATP SINGLES / 11.11.2025 | France Lyon |