Born and raised in Whitby, Zack first suited up on a lacrosse floor at just 3 years of age. He spent many summers playing with the Whitby Warriors and the Oshawa Blue Knights, while also playing hockey for the Whitby Wildcats each winter.
Zack played his junior lacrosse for the Whitby Warriors and received the Joey Nieuwendyk Award as Rookie of the Year for 2002. He also earned the Dean McLeod Award for Playoff MVP in 2004. In the fall of 2005, Zack headed to Duke University on a lacrosse scholarship.
In his four years at Duke, Zack was named an All-American three times, including two first-team selections. He ended his career at Duke as the all-time leader in goals scored for both the university and the National Collegiate Athletic Association (NCAA), and was the recipient of the Jack Turnbull Award, presented to the USILA (United States Intercollegiate Lacrosse Association) Attackman of the Year, following his 2008 season. After graduating from Duke, Zack used his fifth year of eligibility to pursue his MBA degree at Bryant University.
Zack began his professional career in box and field lacrosse in 2009. He was drafted third overall in both the Major League Lacrosse (MLL) and National Lacrosse League (NLL) drafts. He spent time with the Long Island Lizards, the Denver Outlaws, and the Dallas Rattlers of the MLL, winning a championship with Denver in 2014. During his nine seasons in the NLL, Zack amassed more than 500 points (including 275 goals) and he won back-to-back league championships with Edmonton and Saskatchewan in 2015 and 2016 respectively. He also played one season in Major Series Lacrosse (MSL) for the Brampton Excelsiors, winning the Mann Cup alongside his brother Bill in 2011.
On the international stage, Zack won a silver medal with Team Canada and was named to the All-World team at the U-19 World Field Lacrosse Championships in 2003. He was first selected to the Senior Men’s National Field Lacrosse Team in 2010, followed by another selection in 2014 where he helped lead Canada to a gold medal victory over the United States. Zack also won a gold medal with Canada’s Senior Men’s Box Lacrosse Team in 2015 at the World Indoor Lacrosse Championships.
In addition to his efforts on the field of play, Zack has enjoyed a career in the sports and entertainment world as an investor and marketing professional. He currently lives in Dallas, Texas with his wife Kristine and daughters Harlynn and Kinsley.