Amateur
As an amateur, Mackenzie tied for 13th at the 2005 U.S. Women’s Open. She was named the 2005 Pacific Northwest Golf Association’s Women’s Player of the Year and won both the match play and stroke play competitions of the 2005 Trans National Championship. She was a 2005 North and South Amateur Championship semi-finalist. Mackenzie rewrote record books during her career at the University of Washington (UW) and finished her senior year as Golfweek’s top amateur in the nation. In 2006, Mackenzie was the school’s first female golfer to win the Pac-10 Championship individual title and finished the year with a school record scoring average (72.79). She recorded 22 top-10 finishes during her collegiate career and won the 2006 NCAA West Regional. From 2004-06, she was a three-time NGCA All-American and All-Scholar athlete, and First-Team All Pac-10 selection. Mackenzie was a member of the victorious 2006 U.S. Curtis Cup team, where she posted a 3-1 record, and also earned medalist honors at the 2006 U.S. Women’s Amateur Championship. She was one of two female golfers selected to represent the United States at The Sprint International Amateur Championships.