| ATP - Viedeň | 10/25 12:00 | 25 | [89] Gael Monfils v Daniel Altmaier [47] | 6-4,6-4 | |
| ATP - Tokio | 10/16 12:40 | 25 | [12] Tommy Paul v Daniel Altmaier [48] | 3-6,6-1,6-3 | |
| ATP - Šanghaj | 10/04 04:30 | 23 | [49] Daniel Altmaier v Yoshihito Nishioka [38] | 4-6,6-3,6-7 | |
| ATP - Peking | 09/26 04:55 | 14 | [162] Lloyd Harris v Daniel Altmaier [49] | 6-3,6-1 | |
| Davis Cup | 09/17 10:20 | 4 | [157] Damir Dzumhur v Daniel Altmaier [49] | Cancelled | |
| Davis Cup | 09/16 10:00 | 1 | [218] Nerman Fatic v Daniel Altmaier [49] | 6-7,2-6 | |
| US Open | 08/31 15:00 | 24 | [12] Alexander Zverev v Daniel Altmaier [53] | 7-6,3-6,6-4,6-3 | |
| US Open | 08/29 16:45 | 23 | [53] Daniel Altmaier v Constant Lestienne [101] | 6-7,6-3,6-1,6-2 | |
| ATP - Cincinnati | 08/15 15:00 | 24 | [58] Alexei Popyrin v Daniel Altmaier [52] | 6-7,6-4,6-4 | |
| ATP - Cincinnati | 08/13 14:00 | 19 | [52] Daniel Altmaier v Corentin Moutet [79] | 4-6,4-6 | |
| ATP - Cincinnati | 08/12 14:00 | 14 | [52] Daniel Altmaier v Christopher O'Connell [73] | 3-6,7-6,6-4 | |
| ATP - Kitzbühel | 08/02 10:40 | 26 | [76] Daniel Elahi Galan v Daniel Altmaier [51] | 3-6,6-2,7-6 | |
| ATP - Kitzbühel | 08/01 09:30 | 25 | [88] Marc-Andrea Huesler v Daniel Altmaier [51] | 7-6,2-6,4-6 | |
| ATP - Hamburg | 07/28 13:15 | 27 | [79] Zhizhen Zhang v Daniel Altmaier [61] | 6-4,6-4 | |
| ATP - Hamburg | 07/27 15:45 | 26 | [61] Daniel Altmaier v Andrey Rublev [7] | 6-2,6-2 | |
| ATP - Hamburg | 07/24 18:55 | 25 | [61] Daniel Altmaier v Richard Gasquet [48] | 7-5,6-4 | |
| ATP Gstaad | 07/19 14:10 | 26 | [46] Yannick Hanfmann v Daniel Altmaier [64] | 4-6,6-2,7-5 | |
| ATP Gstaad | 07/17 08:30 | 25 | [107] Benjamin Bonzi v Daniel Altmaier [64] | 3-6,4-6 | |
| Challenger - Braunschweig | 07/13 16:35 | 27 | [66] Daniel Altmaier v Franco Agamenone [175] | 3-6,6-2,3-6 | |
| Challenger - Braunschweig | 07/12 11:55 | 26 | [66] Daniel Altmaier v Francesco Passaro [148] | 6-2,6-0 | |
| Challenger - Braunschweig | 07/11 14:30 | 25 | [66] Daniel Altmaier v Carlos Taberner [355] | 6-3,6-3 | |
| Challenger - Braunschweig | 07/11 08:00 | 25 | Daniel Altmaier v Giulio Zeppieri | Cancelled | |
| Wimbledon | 07/03 16:55 | 23 | [87] Aleksandar Vukic v Daniel Altmaier [66] | 6-3,7-6,3-6,7-5 | |
| ATP - Halle | 06/20 10:00 | 25 | Daniel Altmaier v Roberto Bautista Agut | Cancelled | |
| ATP - Halle | 06/18 09:00 | 19 | [59] Daniel Altmaier v Christopher Eubanks [75] | Retired | |
| ATP - Halle | 06/17 09:00 | 45 | [59] Daniel Altmaier v Borna Gojo [111] | 7-6,6-3 | |
| ATP - Stuttgart | 06/13 10:30 | 25 | [74] Christopher O'Connell v Daniel Altmaier [59] | 6-3,6-1 | |
| French Open | 06/03 17:40 | 25 | [79] Daniel Altmaier v Grigor Dimitrov [29] | 4-6,3-6,1-6 | |
| French Open | 06/01 10:40 | 24 | [9] Jannik Sinner v Daniel Altmaier [79] | 7-6,6-7,6-1,6-7,5-7 | |
| French Open | 05/29 15:30 | 23 | [79] Daniel Altmaier v Marc-Andrea Huesler [84] | 6-3,6-4,6-4 |
Wikipedia - Daniel Altmaier
Daniel Altmaier (German pronunciation: [ˈdaːni̯eːl ˈaltmaɪ̯ɐ]; born 12 September 1998) is a German professional tennis player. He has a career high ATP singles ranking of world No. 47, achieved on 2 October 2023. He is the current German No. 3.