Challenger Surbiton | 06/05 10:00 | 25 | [107] Mackenzie McDonald v Peter Polansky [124] | 6-7,7-5,6-3 | |
Challenger Busan | 05/18 05:15 | 27 | [188] Filip Peliwo v Mackenzie McDonald [110] | 2-6,6-3,7-6 | |
Challenger Busan | 05/16 04:00 | 26 | [300] Kaichi Uchida v Mackenzie McDonald [110] | 6-7,3-6 | |
Challenger Busan | 05/15 02:00 | 25 | [231] Brayden Schnur v Mackenzie McDonald [110] | 6-2,2-6,1-6 | |
Challenger Gimcheon | 05/11 05:00 | 27 | [114] Mackenzie McDonald v Soonwoo Kwon [187] | 5-7,5-7 | |
Challenger Gimcheon | 05/09 02:00 | 26 | [114] Mackenzie McDonald v Filip Peliwo [192] | 4-6,6-3,6-1 | |
Challenger Gimcheon | 05/08 02:00 | 25 | [114] Mackenzie McDonald v Ze Zhang [263] | 7-6,7-6 | |
Challenger Seoul | 05/06 07:00 | 29 | [94] Jordan Thompson v Mackenzie McDonald [146] | 6-1,4-6,1-6 | |
Challenger Seoul | 05/05 07:15 | 28 | [146] Mackenzie McDonald v Tatsuma Ito [172] | 6-4,7-6 | |
Challenger Seoul | 05/04 04:40 | 27 | [146] Mackenzie McDonald v Lloyd Harris [232] | 6-7,7-6,6-3 | |
Challenger Seoul | 05/02 06:00 | 26 | [146] Mackenzie McDonald v Kamil Majchrzak [212] | 6-3,6-4 | |
Challenger Seoul | 04/30 04:45 | 25 | Mackenzie McDonald v Uisung Park | 7-5,6-2 | |
Challenger Sarasota | 04/16 16:05 | 25 | [142] Mackenzie McDonald v Jay Clarke [236] | 6-3,3-6,2-6 | |
ATP Houston | 04/10 01:20 | 25 | [58] Frances Tiafoe v Mackenzie McDonald [142] | 6-3,6-3 | |
ATP Miami Qual | 03/20 14:00 | 45 | [172] Darian King v Mackenzie McDonald [143] | 2-6,6-4,6-4 | |
ATP Miami Qual | 03/19 14:00 | 44 | Felix Auger Aliassime v Mackenzie McDonald | 6-3,2-6,6-7 | |
ATP Indian Wells Qual | 03/07 20:15 | 45 | Taro Daniel v Mackenzie McDonald | 6-4,6-3 | |
ATP Indian Wells Qual | 03/07 00:05 | 44 | Alexander Sarkissian v Mackenzie McDonald | 1-6,3-6 | |
ATP Acapulco | 02/28 03:30 | 25 | Mackenzie McDonald v Alexander Zverev | 3-6,5-7 | |
ATP Acapulco Qual | 02/26 02:30 | - | Ernesto Escobedo v Mackenzie McDonald | 7-5,7-6 | |
ATP Acapulco Qual | 02/25 02:55 | 26 | Luis Patino v Mackenzie McDonald | 3-6,4-6 | |
ATP New York | 02/14 02:25 | 25 | Ernesto Escobedo v Mackenzie McDonald | 4-6,6-3,7-6 | |
Challenger San Francisco | 02/09 04:20 | 26 | Jason Jung v Mackenzie McDonald | 1-6,7-6,6-2 | |
Challenger San Francisco | 02/07 05:05 | 25 | Florian Lakat v Mackenzie McDonald | 4-6,4-6 | |
Challenger Dallas | 02/04 03:10 | 29 | Kei Nishikori v Mackenzie McDonald | 6-1,6-4 | |
Challenger Dallas | 02/03 02:50 | 28 | Denis Kudla v Mackenzie McDonald | 4-6,4-6 | |
Challenger Dallas | 02/01 19:00 | 27 | Tim Smyczek v Mackenzie McDonald | 4-6,2-6 | |
Challenger Dallas | 01/31 20:05 | 26 | Mackenzie McDonald v Frances Tiafoe | 7-5,2-6,6-3 | |
Challenger Dallas | 01/29 18:45 | 25 | Mackenzie McDonald v Tatsuma Ito | 7-5,6-3 | |
Australian Open | 01/17 08:35 | 24 | Grigor Dimitrov v Mackenzie McDonald | 4-6,6-2,6-4,0-6,8-6 |
Michael Mackenzie Lowe McDonald (born April 16, 1995) is an American professional tennis player. He reached a career-high singles ranking of world No. 37 in singles and No. 49 in doubles in October 2023. He won the 2016 NCAA Division I Tennis Championships in both singles and doubles.