| US Open | 09/01 15:00 | 23 | [124] Sumit Nagal v Bradley Klahn [129] | 6-1,6-3,3-6,6-1 | |
| Matchplay 120 | 07/02 22:00 | 1 | [102] Marcos Giron v Bradley Klahn [126] | 6-7,7-6,3-6 | |
| Challenger Indian Wells | 03/02 18:00 | 24 | [189] Maxime Janvier v Bradley Klahn [126] | 6-4,6-4 | |
| ATP New York | 02/10 18:35 | 164 | [123] Bradley Klahn v Danilo Petrovic [159] | 3-6,2-6 | |
| ATP New York | 02/09 22:55 | 64 | [123] Bradley Klahn v Marcelo Arevalo [363] | 4-6,6-3,7-6 | |
| Challenger Dallas | 02/06 18:00 | 26 | [188] Joao Menezes v Bradley Klahn [123] | 3-6,7-6,7-6 | |
| Challenger Dallas | 02/05 20:40 | 25 | [262] Roberto Quiroz v Bradley Klahn [123] | 6-7,4-6 | |
| Challenger Newport Beach | 01/31 21:10 | 27 | [132] Bradley Klahn v Steve Johnson [75] | 4-6,2-6 | |
| Challenger Newport Beach | 01/30 19:30 | 26 | [246] Sebastian Korda v Bradley Klahn [132] | 7-5,3-6,4-6 | |
| Challenger Newport Beach | 01/28 23:15 | 25 | Ernesto Escobedo v Bradley Klahn | 5-7,1-6 | |
| Australian Open | 01/16 03:40 | 44 | [159] Viktor Troicki v Bradley Klahn [131] | 6-4,6-2 | |
| Challenger Canberra | 01/09 01:20 | 26 | [84] Steve Johnson v Bradley Klahn [132] | 6-4,7-6 | |
| Challenger Canberra | 01/07 05:25 | 25 | [132] Bradley Klahn v Norbert Gombos [108] | 6-3,6-4 | |
| Challenger Canberra | 01/06 05:55 | 24 | [142] Juan P Varillas v Bradley Klahn [132] | 5-7,3-6 | |
| Challenger Houston | 11/15 18:25 | 26 | [238] Michael Mmoh v Bradley Klahn [107] | 5-7,7-6,7-6 | |
| Challenger Houston | 11/13 17:55 | 25 | [446] Filip C Jianu v Bradley Klahn [107] | 5-7,3-6 | |
| Challenger Knoxville | 11/06 23:55 | 25 | Aleksandar Kovacevic v Bradley Klahn | 3-6,7-6,6-4 | |
| Challenger Ningbo | 10/19 07:15 | 28 | [108] Yasutaka Uchiyama v Bradley Klahn [104] | 4-6,6-4,6-3 | |
| Challenger Ningbo | 10/18 06:50 | 27 | [249] Hiroki Moriya v Bradley Klahn [104] | 6-4,0-6,5-7 | |
| Challenger Ningbo | 10/17 04:55 | 26 | [275] Ji Sung Nam v Bradley Klahn [104] | 6-7,6-7 | |
| Challenger Ningbo | 10/16 03:20 | 25 | [289] Yosuke Watanuki v Bradley Klahn [104] | 7-6,2-6,3-6 | |
| ATP Shanghai | 10/06 05:00 | 46 | [59] Juan Ignacio Londero v Bradley Klahn [96] | 6-4,7-6 | |
| ATP Shanghai | 10/05 04:00 | 45 | [96] Bradley Klahn v Nicolas Jarry [75] | 7-6,3-6,7-5 | |
| ATP Tokyo | 09/28 02:00 | 64 | [79] John Millman v Bradley Klahn [97] | 3-6,7-6,6-2 | |
| ATP Chengdu | 09/26 06:35 | 26 | [97] Bradley Klahn v Denis Shapovalov [34] | 6-3,3-6,6-7 | |
| ATP Chengdu | 09/23 06:30 | 25 | [97] Bradley Klahn v Jason Jung [132] | 4-6,6-3,7-6 | |
| ATP Chengdu | 09/22 03:00 | 164 | [97] Bradley Klahn v Lloyd Harris [112] | 6-3,7-6 | |
| ATP Chengdu | 09/21 03:00 | 64 | [97] Bradley Klahn v Hiroki Moriya [256] | 4-6,6-3,6-4 | |
| Challenger New Haven | 09/06 14:00 | 27 | [108] Bradley Klahn v Tommy Paul [114] | 4-6,4-6 | |
| Challenger New Haven | 09/05 18:15 | 26 | [108] Bradley Klahn v Christopher Eubanks [188] | 3-6,6-3,7-6 |