Began playing tennis at age three, coached by Rosie Baries...Nickname is 'Mackie'...Father, Michael McDonald, is an oral surgeon...Mother is Viviain Young...Has one sister, Dana, who is a gymnast and student at UCLA...Also attends UCLA...Favourite surface is hard and favourite shot is forehand...Favourite tournament is US Open...Idol growing up was John Wooden...Supports UCLA (NCAA), San Francisco 49ers (NFL), San Francisco Giants (MLB) and LA Lakers (NBA)...Best tennis memory is qualifying for the Western & Southern Open...Goal is to reach his highest potential...Coached by Wayne Ferreira since age 11, and trains at Claremont Hotel and Spa in Berkeley, CA, supported by the USTA.