| ATP Genewa | 05/22 10:00 | 25 | [259] Daniel Altmaier v Sam Querrey [28] | 3-6,4-6 | |
| ATP Geneva Qual | 05/21 09:00 | 46 | [239] Petr Michnev v Daniel Altmaier [259] | 2-6,4-6 | |
| ATP Geneva Qual | 05/20 09:00 | 45 | Alexander Ward v Daniel Altmaier | 4-6,3-6 | |
| Challenger Heilbronn | 05/15 15:25 | 25 | [259] Daniel Altmaier v Steven Diez [182] | 4-6,4-6 | |
| ITF Qatar F3 | 04/20 12:30 | 27 | Daniel Altmaier v Jonas Merckx | 1-6,2-6 | |
| ITF Qatar F3 | 04/19 13:20 | 26 | Daniel Altmaier v Gianluca Bergomi | 6-4,6-4 | |
| ITF Qatar F3 | 04/18 13:10 | 25 | Daniel Altmaier v Abdullah S Alharrasi | 6-0,6-1 | |
| ITF Qatar F2 | 04/15 13:00 | 29 | Daniel Altmaier v Antoine Escoffier | 2-6,7-6,4-6 | |
| ITF Qatar F2 | 04/14 13:00 | 28 | [287] Daniel Altmaier v Mats Moraing [388] | 7-6,7-5 | |
| ITF Qatar F2 | 04/13 12:00 | 27 | [287] Daniel Altmaier v David Guez [430] | 6-3,3-6,6-1 | |
| ITF Qatar F2 | 04/12 12:00 | 26 | [287] Daniel Altmaier v Milos Sekulic [360] | 6-2,6-1 | |
| ITF Qatar F2 | 04/11 12:00 | 25 | Daniel Altmaier v Jumpei Yamasaki | 6-1,6-3 | |
| ITF Qatar F1 | 04/08 13:00 | 29 | Daniel Altmaier v Antoine Escoffier | 6-4,6-3 | |
| ITF Qatar F1 | 04/07 13:00 | 28 | [288] Daniel Altmaier v Lenny Hampel [467] | 6-3,6-3 | |
| ITF Qatar F1 | 04/06 12:00 | 27 | [288] Daniel Altmaier v Markus Eriksson [443] | 6-4,1-6,6-3 | |
| ITF Qatar F1 | 04/05 12:00 | 26 | [288] Daniel Altmaier v Milos Sekulic [363] | 6-0,6-1 | |
| ITF Qatar F1 | 04/04 12:00 | 25 | Daniel Altmaier v Tom Kocevar-Desman | 7-6,6-1 | |
| Challenger Drummondville Qual | 03/12 15:30 | 45 | Daniel Altmaier v Tim Puetz | 4-6,4-6 | |
| ITF Canada F2 | 03/07 19:00 | 25 | [396] Brayden Schnur v Daniel Altmaier [296] | 6-3,7-6 | |
| ITF Switzerland F2 | 02/18 10:00 | 29 | Daniel Altmaier v Tim Puetz | 7-5,7-6 | |
| ITF Switzerland F2 | 02/17 13:00 | 28 | Daniel Altmaier v David Pichler | 6-2,6-3 | |
| ITF Switzerland F2 | 02/16 14:40 | 27 | Gregoire Barrere v Daniel Altmaier | 3-6,2-6 | |
| ITF Switzerland F2 | 02/15 11:40 | 26 | Marvin Netuschil v Daniel Altmaier | 4-6,4-6 | |
| ITF Switzerland F2 | 02/13 11:40 | 25 | Lucas Miedler v Daniel Altmaier | 7-6,0-6,3-6 | |
| ITF Switzerland F1 | 02/11 14:40 | 28 | Laurent Lokoli v Daniel Altmaier | 1-6,6-2,6-2 | |
| ITF Switzerland F1 | 02/10 12:00 | 27 | Daniel Altmaier v Niels Lootsma | 6-2,6-2 | |
| ITF Switzerland F1 | 02/09 12:00 | 26 | Daniel Altmaier v Daniel Cukierman | 6-0,6-2 | |
| ITF Switzerland F1 | 02/07 12:00 | 25 | Daniel Altmaier v Hugo Voljacques | 6-2,6-4 | |
| ITF Germany F3 | 01/27 11:30 | 27 | Marvin Netuschil v Daniel Altmaier | 6-4,6-4 | |
| ITF Germany F3 | 01/26 12:00 | 26 | Louis Wessels v Daniel Altmaier | Retired |
Wikipedia - Daniel Altmaier
Daniel Altmaier (ur. 12 września 1998 w Kempen) – niemiecki tenisista.