As a single skater, Mattatall competed on the national level, competing many times at the Canadian Championships. Early in his pairs career, he competed with Lindsay Carruthers. They won the silver medal on the pre-novice level at the 2000 Canadian Championships.[1] After that partnership ended, he competed with Renee Trembley on the novice level, placing 4th at the 2002 Canadian novice national championships.
Brodeur/Mattatal qualified for the 2009 World Championships and placed tenth.[4] They announced their competitive retirement on March 25, 2011.[5] Mattatall now works as a Project Engineer at K+S Windsor Salt in Pugwash, Nova Scotia. John still coaches part time and is quite involved in the skating community.
Personal life
Mattatall is studying engineering at Dalhousie University.
In 2018 John got engaged to his long time girlfriend LaFawnduh Stewart. Their wedding was held in LaFawnduh's home town of Compton CA.