| Challenger Oeiras | 04/15 12:30 | 19 | [207] Lukas Neumayer v Samuel Vincent Ruggeri [272] | Retired | |
| Challenger Oeiras | 04/14 14:45 | 14 | [209] Lukas Neumayer v Alexis Gautier [344] | 6-2,7-6 | |
| Challenger Split | 04/10 10:35 | 26 | [114] Zsombor Piros v Lukas Neumayer [209] | 6-3,6-2 | |
| Challenger Split | 04/09 08:00 | 25 | [330] Mathys Erhard v Lukas Neumayer [209] | 3-6,2-6 | |
| Challenger Split | 04/09 08:00 | 25 | Timofey Skatov v Lukas Neumayer | Cancelled | |
| Challenger Barcelona | 04/02 14:00 | 25 | [210] Lukas Neumayer v Bernabe Zapata Miralles [143] | 3-6,3-6 | |
| Challenger Zadar | 03/22 12:45 | 27 | [219] Lukas Neumayer v Jonas Forejtek [421] | 3-6,6-1,4-6 | |
| Challenger Zadar | 03/20 13:40 | 26 | [90] Dominic Thiem v Lukas Neumayer [219] | 2-6,1-6 | |
| Challenger Zadar | 03/19 11:50 | 25 | [330] Mathys Erhard v Lukas Neumayer [219] | 3-6,2-6 | |
| Challenger Szekesfehervar | 03/12 14:20 | 25 | [220] Lukas Neumayer v Samuel Vincent Ruggeri [299] | 6-1,4-6,3-6 | |
| Challenger Tenerife | 03/01 14:40 | 27 | [399] Martin Landaluce v Lukas Neumayer [227] | 6-3,6-3 | |
| Challenger Tenerife | 02/29 10:00 | 26 | [227] Lukas Neumayer v August Holmgren [292] | 6-3,6-7,6-4 | |
| Challenger Tenerife | 02/27 14:35 | 25 | [188] Stefano Travaglia v Lukas Neumayer [227] | 3-6,2-6 | |
| Challenger Tenerife | 02/20 10:00 | 25 | [230] Lukas Neumayer v Raul Brancaccio [329] | 6-3,3-6,5-7 | |
| Challenger Tenerife | 02/19 13:30 | 25 | Lukas Neumayer v Ilya Ivashka | Cancelled | |
| ITF M25 Antalya | 02/16 10:50 | 27 | [488] Daniel Merida v Lukas Neumayer [230] | 6-1,7-6 | |
| ITF M25 Antalya | 02/16 07:00 | 26 | Svyatoslav Gulin v Lukas Neumayer | 5-7,1-6 | |
| ITF M25 Antalya | 02/15 10:55 | 25 | Alejo Lorenzo Lingua Lavallen v Lukas Neumayer | 7-5,3-6,2-6 | |
| Challenger Punta del Este | 01/23 17:55 | 25 | [241] Facundo Bagnis v Lukas Neumayer [229] | 6-3,3-6,6-4 | |
| Challenger Buenos Aires | 01/16 19:35 | 25 | [307] Murkel Dellien v Lukas Neumayer [229] | 1-6,7-5,6-3 | |
| Challenger Buenos Aires | 01/10 13:00 | 26 | [233] Lukas Neumayer v Gianluca Mager [335] | 6-3,6-7,4-6 | |
| Challenger Buenos Aires | 01/08 21:15 | 25 | [233] Lukas Neumayer v Carlos Sanchez Jover [352] | 7-6,6-3 | |
| Challenger Maspalomas | 11/27 15:35 | 25 | [229] Lukas Neumayer v Timo Stodder [328] | 3-6,3-6 | |
| Challenger Guayaquil | 11/02 17:00 | 26 | [243] Roman A Burruchaga v Lukas Neumayer [225] | 5-7,6-0,6-4 | |
| Challenger Guayaquil | 11/01 00:25 | 25 | [333] Alvaro G Meza v Lukas Neumayer [225] | 4-6,6-2,4-6 | |
| Challenger Curitiba | 10/25 14:00 | 26 | [235] Lukas Neumayer v Roman A Burruchaga [227] | 5-7,3-6 | |
| Challenger Curitiba | 10/23 18:40 | 25 | [118] Vit Kopriva v Lukas Neumayer [235] | 0-6,6-7 | |
| Challenger Santa Fe | 10/16 18:50 | 25 | [234] Lukas Neumayer v Felipe M R Alves [142] | 5-7,1-6 | |
| Challenger Buenos Aires | 10/10 15:50 | 25 | [231] Lukas Neumayer v Jozef Kovalik [185] | 7-6,4-6,2-6 | |
| Challenger Bad Waltersdorf | 09/19 08:00 | 25 | [343] Ergi Kirkin v Lukas Neumayer [209] | 7-5,2-6,6-1 |