Michael Mackenzie Lowe McDonald is a professional American tennis player, who is of Scottish, Chinese, and English descent. His professional career started when he was qualified for the semifinals in the 2012 Australian Open (singles). In the same year, he ranked World Tour Junior No. 12 and won the 18s singles.
The following year, he was hailed the champion in the Ojai Tennis Tournament in 2013 and got qualified for the 2013 Cincinnati Masters. He managed to play against the Top 100 tennis players, Nicolas Mahut and Steve Johnson. Unfortunately, he lost to his fellow qualifier David Goffin.
During his first year in college, he became the No. 1 player according to the International Tennis Association. He entered as a freshman at UCLA, where he was hailed as the Pac-12 Freshman of the Year. In the same year, he became a quarterfinalist for the Singles Championship at NCAA. By the following year, he became the Number 1 Tennis player for both singles and doubles and managed to beat top-ranked Axel Alvarez. In his last year in college, he also defeated No. 1 Mikael Torpegaard for the singles championship.
His professional debut started in 2014 at age 18 when he joined the Western and Southern Open. Despite never having an ATP point before, he managed to defeat two top 100 tennis players. Even though he lost to David Goffin, he was given a chance to enter the wildcard entry in the 2013 US Open.
In 2018, he made his debut in the Top 100 when he participated in the Australian Open. He won over Elias Ymer but was defeated by Grigor Dimitrov. Soon after, he participated in the Wimbledon Open where he achieved his first Grand Slam third-round by defeating Nicolas Jarry and Guido Pella. However, in Round 16, he was defeated by Milos Raonic.
Highest Ranking at World Number 57 in SinglesHighest Ranking at World Number 182 in DoublesChampion in 2016 NCAA Division I Tennis Championships (Singles and Doubles)