Lukas Klein - ATP #126 (2025-10-13)
| atpworldtour.com | ATP | Country |  Slovakia |
| Wikipedia | Eng / Fr | Birth | 1998-03-22 - age 27 |
| Career best ranking | 107 - 2024-08-05 - age 26 (+4 M) | Résidence |  Unknown |
| Height | 193 cm | ||
| Weight | 85 kg |
| Conditions | W | D | ratio |
|---|---|---|---|
| Hard (out.) | 4 | 8 | 33.33% |
| Hard (in.) | 7 | 6 | 53.85% |
| Clay | 9 | 8 | 52.94% |
| Grass | 1 | 3 | 25.00% |
| TOTAL | 21 | 25 | 45.65% |
| # | Date | Categ | Tournament | Conditions | Round | #Rank | Opponent | Score | |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 2025-01-12 | GS |  Australian Open | Hard (out.) | 64e | #137 |  #22 Sebastian Korda | 6/3 0/6 6/3 7/6(6) | |
| 2 | 2024-11-04 | 250 |  Belgrade Open Hard | Hard (in.) | QF | #156 |  #29 Jiri Lehecka | 3/6 7/6(3) 6/3 | |
| 3 | 2024-11-04 | 250 | Belgrade Open Hard | Hard (in.) | 8e | #156 |  #39 Tomas Martin Etcheverry | 6/4 7/6(6) | |
| 4 | 2024-11-04 | 250 | Belgrade Open Hard | Hard (in.) | 16e | #156 | #75 James Duckworth | 6/4 6/2 | |
| 5 | 2024-09-18 | 250 |  Chengdu Open | Hard (out.) | 8e | #127 |  #28 Nicolas Jarry | 7/6(2) 3/6 6/4 | |
| 6 | 2024-09-18 | 250 | Chengdu Open | Hard (out.) | 16e | #127 | #93 Adam Walton | 7/6(3) 6/4 | |
| 7 | 2024-07-22 | 250 |  Kitzbuhel Open | Clay | 16e | #130 |  #71 Sumit Nagal | 6/4 1/6 7/6(3) | |
| 8 | 2024-04-22 | 1000 |  Masters de Madrid | Clay | 32e | #122 | #16 Tommy Paul | 6/7(5) 6/1 6/4 | |
| 9 | 2024-04-22 | 1000 | Masters de Madrid | Clay | 64e | #122 | #141 Pablo Llamas Ruiz | 6/1 4/6 7/6(4) | |
| 10 | 2024-03-20 | 1000 | Miami Masters | Hard (out.) | 64e | #121 | #73 Alex Michelsen | 7/6(5) 6/2 | |
| 11 | 2024-03-06 | 1000 | Indian Wells Masters | Hard (out.) | 32e | #135 |  #8 Casper Ruud | 6/4 7/6(4) | |
| 12 | 2024-03-06 | 1000 | Indian Wells Masters | Hard (out.) | 64e | #135 | #161 Nicolas Moreno De Alboran | 7/6(8) 6/4 | |
| 13 | 2024-01-14 | GS | Australian Open | Hard (out.) | 32e | #170 |  #7 Alexander Zverev | 7/5 3/6 4/6 7/6(5) 7/6(7) | |
| 14 | 2024-01-14 | GS | Australian Open | Hard (out.) | 64e | #170 |  #196 Soonwoo Kwon | 7/6(7) 4/6 7/6(3) 6/3 | |
| 15 | 2023-09-18 | Challenger |  Saint-Tropez Challenger | Hard (out.) | 8e | #149 |  #101 Liam Broady | 6/2 6/2 | |
| 16 | 2023-09-18 | Challenger | Saint-Tropez Challenger | Hard (out.) | 16e | #149 | #240 Jules Marie | 4/6 6/3 6/3 | |
| 17 | 2023-07-10 | Challenger | Salzburg Open (Challenger) | Clay | 8e | #136 | #10000 Sebastian Ofner | 6/4 7/5 | |
| 18 | 2023-07-10 | Challenger | Salzburg Open (Challenger) | Clay | 16e | #136 | #132 Dennis Novak | 7/5 5/7 6/3 | |
| 19 | 2023-06-19 | Challenger | Ilkley Trophy | Grass | 16e | #147 |  #156 Mattia Bellucci | 4/6 6/4 6/4 | |
| 20 | 2023-02-20 | 250 | Open 13 | Hard (in.) | 16e | #141 |  #39 David Goffin | 6/2 6/4 | |
| 21 | 2023-01-02 | Challenger | Canberra Challenger | Hard (out.) | 16e | #136 | #135 Luca Nardi | 7/5 6/2 | |
| 22 | 2022-09-05 | Challenger | Tulln Challenger | Clay | QF | #300 |  #133 Elias Ymer | 7/5 6/3 | |
| 23 | 2022-09-05 | Challenger | Tulln Challenger | Clay | 8e | #300 |  #144 Felipe Meligeni Rodrigues Alves | 4/6 7/6(4) 6/4 | |
| 24 | 2022-09-05 | Challenger | Tulln Challenger | Clay | 16e | #300 | #136 Dennis Novak | 7/6(9) 6/4 | |
| 25 | 2022-07-11 | Challenger |  Concord Iasi Open - Challenger | Clay | QF | #243 | #100 Pablo Andujar | 6/3 6/4 | |
| 26 | 2022-07-11 | Challenger | Concord Iasi Open - Challenger | Clay | 8e | #243 |  #279 Oleksii Krutykh | 6/3 6/4 | |
| 27 | 2022-07-11 | Challenger | Concord Iasi Open - Challenger | Clay | 16e | #243 | #186 Renzo Olivo | 6/3 3/6 6/4 | |
| 28 | 2022-06-27 | GS | Wimbledon | Grass | 64e | #220 | #137 Liam Broady | 4/6 6/3 7/5 6/7(2) 6/3 | |
| 29 | 2021-08-23 | Challenger |  Varsovie Challenger | Clay | QF | #251 | #331 Javier Barranco Cosano | 3/6 6/3 6/4 | |
| 30 | 2021-08-23 | Challenger | Varsovie Challenger | Clay | 8e | #251 |  #278 Andrey Kuznetsov | 7/5 6/1 | |
| 31 | 2021-08-23 | Challenger | Varsovie Challenger | Clay | 16e | #251 | #312 Julian Lenz | 6/1 3/6 6/3 | |
| 32 | 2021-07-24 | OG | JO - Olympic Games | Hard (out.) | 32e | #246 | #77 James Duckworth | 5/7 6/3 7/6(4) | |
| 33 | 2021-06-21 | 250 | Mallorca Open | Grass | 8e | #254 | #81 Jordan Thompson | 6/4 6/4 | |
| 34 | 2021-06-21 | 250 | Mallorca Open | Grass | 16e | #254 | #40 Dusan Lajovic | 6/4 7/6(2) | |
| 35 | 2021-05-24 | 250 | Belgrade Open Clay | Clay | 16e | #255 | #50 Federico Delbonis | 3/6 6/3 6/4 | |
| 36 | 2021-03-01 | 250 | Buenos Aires Open | Clay | 8e | #291 | #9 Diego Schwartzman | 6/4 6/2 | |
| 37 | 2021-03-01 | 250 | Buenos Aires Open | Clay | 16e | #291 | #101 Andrej Martin | 6/4 6/3 | |
| 38 | 2020-11-16 | Finals | LLTL Finals - Ortisei Challenger | Hard (in.) | 16e | #316 | #258 Julian Lenz | 6/3 7/5 | |
| 39 | 2020-11-09 | NGFinals | NextGen LLTL Finals - Slovak Open | Hard (in.) | DF | #315 | #215 Tomas Machac | 7/6(5) 6/2 | |
| 40 | 2020-11-09 | NGFinals | NextGen LLTL Finals - Slovak Open | Hard (in.) | QF | #315 |  #84 Emil Ruusuvuori | 6/4 7/5 | |
| 41 | 2020-11-09 | NGFinals | NextGen LLTL Finals - Slovak Open | Hard (in.) | 8e | #315 | #147 Lorenzo Giustino | 6/4 6/3 | |
| 42 | 2020-11-09 | NGFinals | NextGen LLTL Finals - Slovak Open | Hard (in.) | 16e | #315 | #181 Filip Horansky | 6/4 6/4 | |
| 43 | 2019-11-04 | NGFinals | NextGen LLTL Finals - Slovak Open | Hard (in.) | 8e | #331 |  #67 Mikhail Kukushkin | 6/3 6/7(4) 6/4 | |
| 44 | 2019-11-04 | NGFinals | NextGen LLTL Finals - Slovak Open | Hard (in.) | 16e | #331 | #119 Jiri Vesely | 4/6 7/6(5) 6/2 | |
| 45 | 2019-11-04 | NGFinals | NextGen LLTL Finals - Slovak Open | Hard (in.) | 32e | #331 |  #219 Mohamed Safwat | 6/2 6/3 | |
| 46 | 2019-10-21 | Challenger | Open de Brest | Hard (in.) | 32e | #312 | #272 Illya Marchenko | 6/4 6/2 |
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