| Challenger Tallahassee | 04/24 18:30 | 25 | [238] Christian Harrison v Jay Clarke [227] | 3-6,6-3,2-6 | |
| Challenger Sarasota | 04/17 16:40 | 25 | [235] Christian Harrison v Juan Ignacio Londero [218] | 4-6,1-6 | |
| Challenger Le Gosier | 03/29 19:00 | 26 | [217] Christian Harrison v Bradley Klahn [163] | 6-3,6-7,4-6 | |
| Challenger Le Gosier | 03/28 23:50 | 25 | [217] Christian Harrison v Gianni Mina [483] | 6-4,6-2 | |
| Challenger Drummondville | 03/15 15:45 | 26 | Brayden Schnur v Christian Harrison | 6-4,6-3 | |
| Challenger Drummondville | 03/13 16:05 | 25 | Christian Harrison v John-Patrick Smith | 6-0,6-7,7-6 | |
| ATP Indian Wells Qual | 03/07 01:30 | 44 | Cameron Norrie v Christian Harrison | 6-2,6-3 | |
| Challenger Indian Wells | 03/02 19:30 | 27 | Christian Harrison v Vasek Pospisil | 6-7,1-6 | |
| Challenger Indian Wells | 03/01 20:35 | 26 | Christian Harrison v Dennis Novikov | 6-3,7-6 | |
| Challenger Indian Wells | 02/27 21:00 | 25 | Yannick Hanfmann v Christian Harrison | 6-3,3-6,3-6 | |
| Challenger Indian Wells Qual | 02/25 18:00 | 46 | Christian Harrison v Marinko Matosevic | 6-4,6-4 | |
| Challenger Launceston | 02/05 02:20 | 25 | Alexander Sarkissian v Christian Harrison | 6-3,6-3 | |
| Challenger Burnie | 01/30 23:00 | 26 | Daniel Altmaier v Christian Harrison | 6-0,6-4 | |
| Challenger Burnie | 01/28 23:30 | 25 | Bradley Mousley v Christian Harrison | 1-6,5-7 | |
| Australian Open Qual | 01/12 00:30 | 45 | Christian Harrison v Peter Polansky | 2-6,5-7 | |
| Australian Open Qual | 01/10 04:30 | 44 | Christian Harrison v Reilly Opelka | 7-6,7-6 | |
| Challenger Noumea | 01/02 06:05 | 25 | Stephane Robert v Christian Harrison | 6-2,6-7,6-1 | |
| ITF USA F38 | 11/22 15:00 | 26 | Christian Harrison v Jeffrey Schorsch | 5-7,6-3,6-7 | |
| ITF USA F38 | 11/20 18:00 | 25 | Christian Harrison v Matthew Mendez | 6-0,6-2 | |
| Challenger Champaign | 11/15 17:30 | 26 | [85] Tennys Sandgren v Christian Harrison [242] | Walkover | |
| Challenger Champaign | 11/14 00:05 | 25 | [358] Edward Corrie v Christian Harrison [242] | 6-3,4-6,4-6 | |
| Challenger Knoxville | 11/08 17:30 | 25 | Kevin King v Christian Harrison | Cancelled | |
| Challenger Charlottesville | 10/31 15:20 | 25 | Christopher Eubanks v Christian Harrison | Cancelled | |
| Challenger Stockton | 10/05 19:00 | 26 | [205] Tim Smyczek v Christian Harrison [251] | 2-6,6-3,6-4 | |
| Challenger Stockton | 10/03 17:00 | 25 | [251] Christian Harrison v Ramkumar Ramanathan [149] | 6-1,6-2 | |
| Challenger Tiburon | 09/29 23:55 | 27 | [266] Christian Harrison v Tennys Sandgren [104] | 1-6,2-6 | |
| Challenger Tiburon | 09/28 18:00 | 26 | [325] Jan Choinski v Christian Harrison [266] | 4-6,6-7 | |
| Challenger Tiburon | 09/26 17:00 | 25 | [266] Christian Harrison v Kaichi Uchida [385] | 6-2,6-4 | |
| Challenger Cary | 09/14 17:40 | 26 | [201] Mackenzie McDonald v Christian Harrison [274] | 6-3,7-5 | |
| Challenger Cary | 09/13 18:50 | 25 | Christian Harrison v Aleksandar Vukic | 6-3,7-5 |
Wikipedia - Christian Harrison
Christian Harrison (born May 29, 1994) is an American professional tennis player. He has a career-high ranking of world No. 198 achieved on 2 July 2018 and a doubles ranking of world No. 145 achieved on 15 January 2024.