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