| Challenger Braga | 05/07 10:20 | 25 | Vit Kopriva v Dominik Koepfer | 4-6,2-6 | |
| Challenger Ostrava | 05/01 10:15 | 25 | [298] Jannik Sinner v Dominik Koepfer [181] | 6-2,6-3 | |
| Challenger Francavilla | 04/24 08:00 | 25 | Giulio Zeppieri v Dominik Koepfer | 6-4,4-6,6-3 | |
| Challenger Sarasota | 04/17 14:00 | 25 | [183] Dominik Koepfer v Guilherme Clezar [244] | 7-6,3-6,5-7 | |
| ATP Houston | 04/06 16:05 | 64 | [184] Dominik Koepfer v Mitchell Krueger [171] | 6-3,3-6,4-6 | |
| Challenger Monterrey | 04/05 03:25 | 26 | [91] Feliciano Lopez v Dominik Koepfer [184] | 7-6,6-2 | |
| Challenger Monterrey | 04/04 02:20 | 25 | [318] Marcelo T B Vera v Dominik Koepfer [184] | 6-7,6-7 | |
| Challenger Indian Wells | 02/26 00:20 | 24 | [179] Dominik Koepfer v Tommy Robredo [210] | 6-4,5-7,2-6 | |
| ATP Delray Beach | 02/16 21:10 | 64 | [178] Dominik Koepfer v Daniel Evans [147] | 6-3,3-6,4-6 | |
| Challenger Dallas | 02/08 21:35 | 27 | [98] Reilly Opelka v Dominik Koepfer [167] | 7-6,3-6,7-6 | |
| Challenger Dallas | 02/07 17:50 | 26 | [167] Dominik Koepfer v Evan King [317] | 7-5,7-6 | |
| Challenger Dallas | 02/05 16:00 | 25 | [167] Dominik Koepfer v Vincent Millot [326] | 6-4,6-1 | |
| Challenger Cleveland | 01/29 23:00 | 25 | [160] Dominik Koepfer v Borna Gojo [339] | 1-6,7-5,4-6 | |
| Challenger Newport Beach | 01/22 20:55 | 25 | [160] Dominik Koepfer v Thomaz Bellucci [225] | 4-6,4-6 | |
| Australian Open | 01/09 23:00 | 45 | [119] Lloyd Harris v Dominik Koepfer [161] | 7-5,6-3 | |
| Australian Open | 01/08 01:20 | 44 | [161] Dominik Koepfer v Blake Ellis [350] | 3-6,6-0,6-3 | |
| Challenger Playford | 01/02 23:30 | 26 | [161] Dominik Koepfer v Mats Moraing [150] | 1-6,4-6 | |
| Challenger Playford | 01/01 23:30 | 25 | [161] Dominik Koepfer v Go Soeda [214] | 6-4,7-5 | |
| Challenger Houston | 11/17 17:45 | 28 | [171] Dominik Koepfer v Bradley Klahn [97] | 3-6,4-6 | |
| Challenger Houston | 11/16 17:30 | 27 | [171] Dominik Koepfer v Ivo Karlovic [102] | 6-1,6-4 | |
| Challenger Houston | 11/14 20:50 | 26 | [171] Dominik Koepfer v Ernesto Escobedo [200] | 6-1,7-5 | |
| Challenger Houston | 11/12 18:30 | 25 | [171] Dominik Koepfer v Marcelo Arevalo [187] | 7-6,3-6,6-4 | |
| Challenger Knoxville | 11/08 15:00 | 26 | [140] Tim Smyczek v Dominik Koepfer [177] | 6-4,7-6 | |
| Challenger Knoxville | 11/06 18:10 | 25 | [177] Dominik Koepfer v Mitchell Krueger [254] | 6-1,2-6,6-2 | |
| Challenger Charlottesville | 10/29 21:05 | 25 | [239] Tobias Kamke v Dominik Koepfer [179] | 6-1,3-6,6-1 | |
| Challenger Las Vegas | 10/22 20:10 | 25 | [221] Darian King v Dominik Koepfer [180] | 6-4,6-4 | |
| Challenger Fairfield | 10/11 20:25 | 26 | [158] Bjorn Fratangelo v Dominik Koepfer [180] | 7-5,6-3 | |
| Challenger Fairfield | 10/10 03:35 | 25 | [180] Dominik Koepfer v Ivo Karlovic [117] | 6-4,6-4 | |
| Challenger Stockton | 10/01 19:50 | 25 | [121] Lloyd Harris v Dominik Koepfer [172] | 6-3,6-4 | |
| Challenger Columbus | 09/21 14:00 | 27 | [111] Jordan Thompson v Dominik Koepfer [178] | 4-6,6-1,6-3 |
Wikipedia - Dominik Koepfer
Dominik Koepfer (born 29 April 1994), also spelled Köpfer, is a German professional tennis player. He achieved a career-high ATP singles ranking of world No. 49 on 4 March 2024, and a doubles ranking of No. 92 on 14 February 2022. He played college tennis at Tulane University.