| ITF M15 Monastir | 05/14 10:00 | 25 | 왈라르트, 엔조 v Harper, Mitchell | 6-3,6-4 | |
| ITF M25 Varnamo | 05/08 08:15 | 25 | 골라, 안드레아 v Harper, Mitchell | 6-4,3-6,6-2 | |
| ITF M15 Meerbusch | 04/22 16:00 | 62 | Harper, Mitchell v Julius Seifert | 4-6,4-6 | |
| ITF M15 Meerbusch | 04/21 15:00 | 62 | Harper, Mitchell v Elias Julian Werner | 7-5,6-2 | |
| ITF M15 Azay-le-Rideau | 04/14 10:00 | 54 | Harper, Mitchell v Niels Villard | 6-7,4-6 | |
| ITF M15 Lons-le-Saunier | 04/01 09:00 | 54 | Harper, Mitchell v 레베니우, 시몬 | 4-6,6-7 | |
| ITF M15 Lons-le-Saunier | 03/31 08:00 | 54 | Harper, Mitchell v Leo Cohen Bacrie | 6-3,6-1 | |
| ITF M25 Calabasas | 03/20 21:05 | 25 | 반데카스틸, 퀸 v Harper, Mitchell | 6-3,6-4 | |
| ITF M25 Calabasas | 03/19 19:25 | 54 | Harper, Mitchell v 마르틴, 토비 | 7-6,7-5 | |
| ITF M25 Calabasas | 03/18 19:30 | 54 | Harper, Mitchell v Oren Vasser | 3-6,7-6,10-4 | |
| ITF M25 Bakersfield | 03/13 17:00 | 25 | Trevor Svajda v Harper, Mitchell | 6-2,6-3 | |
| ITF M25 Bakersfield | 03/12 20:20 | 54 | Harper, Mitchell v 새인, 월리 | 6-3,7-6 | |
| ITF M25 Bakersfield | 03/11 18:00 | 54 | Harper, Mitchell v Anirudh Rao | 6-1,6-0 | |
| ITF M25 Naples | 02/20 15:00 | 54 | 마레로 쿠르벨로, 이반 v Harper, Mitchell | 7-6,6-1 | |
| Challenger Burnie Qual | 02/04 00:55 | 45 | Ilagan, Andre v Harper, Mitchell | 6-4,7-5 | |
| Challenger Burnie | 01/28 23:00 | 19 | Matt Hulme v Harper, Mitchell | 6-0,7-6 | |
| Challenger Burnie | 01/27 23:00 | 45 | Harper, Mitchell v 푸테르길, 칼룸 | 6-3,5-7,6-2 | |
| Challenger Canberra | 12/31 02:35 | 14 | Harper, Mitchell v Hoole, Casey | 3-6,3-6 | |
| ITF M15 East Lansing | 11/15 19:55 | 25 | Harper, Mitchell v 타노스, 아리스토텔리스 | 1-6,2-6 | |
| ITF M15 Winston-Salem | 11/09 16:55 | 26 | Harper, Mitchell v 후드, 에밀 | 5-7,5-7 | |
| ITF M15 Winston-Salem | 11/07 17:30 | 25 | Harper, Mitchell v 폴링, 칼 | 6-4,6-4 | |
| ITF M15 Los Angeles | 06/21 21:30 | 25 | Harper, Mitchell v James Watt | Walkover | |
| ITF M15 San Diego | 06/14 19:15 | 25 | 쿠하르, 맷 v Harper, Mitchell | 6-4,6-2 | |
| ITF M15 San Diego | 06/08 19:40 | 26 | Eriksson Ziverts, Jonas v Harper, Mitchell | 6-4,7-6 | |
| ITF M15 San Diego | 06/07 15:50 | 25 | Harper, Mitchell v 브리머, 개그 | 6-3,7-6 | |
| ITF M15 Rancho Santa Fe | 05/30 19:00 | 25 | 안트로프, 잭 v Harper, Mitchell | 6-1,6-2 | |
| ITF M15 Tbilisi | 05/05 08:00 | 28 | Harper, Mitchell v Kimhi, Orel | 4-6,2-6 | |
| ITF M15 Tbilisi | 05/04 09:25 | 27 | 아가포노브, 이고르 v Harper, Mitchell | 6-7,6-7 | |
| ITF M15 Tbilisi | 05/03 13:30 | 26 | Jacob Bradshaw v Harper, Mitchell | 1-6,1-6 | |
| ITF M15 Tbilisi | 05/02 11:15 | 25 | Harper, Mitchell v 푸르트셀라드즈, 사바 | Retired |