| Wimbledon | 06/28 11:35 | 23 | [61] Daniel Altmaier v Mikael Ymer [88] | 3-6,5-7,5-7 | |
| ATP Mallorca | 06/23 11:00 | 27 | [64] Daniel Altmaier v Benjamin Bonzi [56] | 3-6,4-6 | |
| ATP Mallorca | 06/22 13:15 | 26 | [36] Sebastian Baez v Daniel Altmaier [64] | 2-6,6-2,4-6 | |
| ATP Mallorca | 06/21 13:55 | 25 | [64] Daniel Altmaier v Dusan Lajovic [63] | 7-5,7-6 | |
| ATP Halle | 06/14 12:30 | 25 | [65] Nick Kyrgios v Daniel Altmaier [66] | 6-3,7-5 | |
| ATP Stuttgart | 06/06 10:25 | 25 | [61] Oscar Otte v Daniel Altmaier [59] | 7-6,7-6 | |
| French Open | 05/22 09:00 | 23 | [54] Daniel Altmaier v Jaume Munar [91] | 1-6,3-6,6-4,3-6 | |
| ATP Lyon | 05/17 09:00 | 25 | [54] Daniel Altmaier v Federico Coria [59] | 3-6,6-3,3-6 | |
| Challenger Heilbronn | 05/14 14:00 | 29 | [66] Daniel Altmaier v Andrej Martin [144] | 3-6,6-1,6-4 | |
| Challenger Heilbronn | 05/13 14:50 | 28 | [66] Daniel Altmaier v Daniel Elahi Galan [105] | 6-3,2-6,6-4 | |
| Challenger Heilbronn | 05/12 11:50 | 27 | [66] Daniel Altmaier v Thiago Agustin Tirante [208] | 6-3,6-2 | |
| Challenger Heilbronn | 05/11 14:00 | 26 | [66] Daniel Altmaier v Constant Lestienne [175] | 6-1,6-4 |