ATP Miami | 03/27 01:05 | 24 | [120] Mackenzie McDonald v John Isner [28] | 6-2,3-6,5-7 | |
ATP Miami | 03/24 21:30 | 23 | [67] Vasek Pospisil v Mackenzie McDonald [120] | 3-6,6-4,3-6 | |
ATP Miami | 03/23 15:45 | 19 | [120] Mackenzie McDonald v Ivo Karlovic [172] | 7-6,6-4 | |
ATP Miami | 03/22 16:25 | 14 | [120] Mackenzie McDonald v Roberto Cid Subervi [242] | 6-1,6-1 | |
ATP Marseille | 03/10 15:10 | 26 | [21] Karen Khachanov v Mackenzie McDonald [120] | 7-6,6-4 | |
ATP Marseille | 03/09 12:30 | 25 | [65] Stefano Travaglia v Mackenzie McDonald [120] | 6-7,6-7 | |
Challenger Nur-Sultan | 03/04 07:35 | 26 | [118] Mackenzie McDonald v Tomas Machac [166] | 4-6,1-6 | |
Challenger Nur-Sultan | 03/02 09:45 | 25 | [118] Mackenzie McDonald v Brayden Schnur [216] | 6-3,4-6,6-4 | |
Challenger Nur-Sultan | 02/28 13:00 | 29 | [139] Mackenzie McDonald v Jurij Rodionov [152] | 6-1,6-2 | |
Challenger Nur-Sultan | 02/27 05:00 | 28 | [139] Mackenzie McDonald v Henri Laaksonen [134] | 6-2,6-1 | |
Challenger Nur-Sultan | 02/26 05:00 | 27 | [139] Mackenzie McDonald v Frederico F Silva [184] | 6-4,3-6,7-6 | |
Challenger Nur-Sultan | 02/24 10:00 | 26 | [139] Mackenzie McDonald v Denis Istomin [195] | 6-2,6-3 | |
Challenger Nur-Sultan | 02/22 13:00 | 25 | [94] Mikhail Kukushkin v Mackenzie McDonald [139] | 5-7,5-7 | |
Australian Open | 02/15 01:50 | 26 | [192] Mackenzie McDonald v Daniil Medvedev [4] | 4-6,2-6,3-6 | |
Australian Open | 02/13 01:55 | 25 | [91] Lloyd Harris v Mackenzie McDonald [192] | 6-7,1-6,4-6 | |
Australian Open | 02/11 04:25 | 24 | [192] Mackenzie McDonald v Borna Coric [25] | 6-4,6-2,4-6,6-4 | |
Australian Open | 02/09 00:00 | 23 | [192] Mackenzie McDonald v Marco Cecchinato [82] | 3-6,6-3,6-2,6-2 | |
ATP Murray River Open | 02/03 00:00 | 25 | [174] Alex Bolt v Mackenzie McDonald [194] | 6-4,6-7,7-5 | |
ATP Murray River Open | 02/01 02:35 | 24 | [194] Mackenzie McDonald v Richard Gasquet [48] | 7-6,7-5 | |
ATP Delray Beach | 01/08 01:00 | 25 | [194] Mackenzie McDonald v Sam Querrey [56] | 3-6,4-6 | |
Challenger Orlando | 11/20 18:20 | 27 | Brandon Nakashima v Mackenzie McDonald | 6-3,7-6 | |
Challenger Orlando | 11/19 15:00 | 26 | [203] Elias Ymer v Mackenzie McDonald [196] | 3-6,3-6 | |
Challenger Orlando | 11/17 19:10 | 25 | [272] Teymuraz Gabashvili v Mackenzie McDonald [196] | 2-6,1-6 | |
Challenger Cary | 11/10 18:00 | 25 | Alexis Galarneau v Mackenzie McDonald | 6-2,4-6,6-1 | |
ATP Nur-Sultan | 10/30 13:00 | 27 | [39] Adrian Mannarino v Mackenzie McDonald [209] | 6-1,6-4 | |
ATP Nur-Sultan | 10/29 09:40 | 26 | [103] Andreas Seppi v Mackenzie McDonald [209] | 6-3,3-6,3-6 | |
ATP Nur-Sultan | 10/28 12:10 | 25 | [209] Mackenzie McDonald v Alexander Bublik [49] | 6-3,6-2 | |
Challenger Istanbul | 10/23 08:00 | 27 | [223] Mackenzie McDonald v Martin Klizan [168] | 6-4,4-6,3-6 | |
Challenger Istanbul | 10/22 09:40 | 26 | [292] Nino Serdarusic v Mackenzie McDonald [223] | 6-7,3-6 | |
Challenger Istanbul | 10/20 10:00 | 25 | [221] Mackenzie McDonald v Teymuraz Gabashvili [271] | 6-4,6-1 |
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.