Hailing from Oakville in his native land, Mackenzie explained how stumbling upon a sport he knew nothing about turned into a profession, and a trip to New Zealand to play in the Rugby World Cup three years ago.
"Like most Canadian kids I played Ice Hockey and American Football, but the way my school worked meant that you had to play a sport every semester. All my friends were playing Rugby, so I decided to give it a try."
As any fan will know, picking up the complex rules of the sport can be tough when you are introduced from a very early age, especially for a young man who had barely heard of the sport before he started playing.
"I knew absolutely nothing about Rugby when I first started, which meant I spent a lot of time figuring it all out. I enjoyed running with the ball on the wing, but learning the smaller details and laws of the game took a while."
Mackenzie took no time in getting stuck into the game though, getting called up for the national side in 2008. Just a year after his debut against Portugal, the 27 year-old took a trip into the unknown, signing for Coventry.
A relaxed and chilled out Canadian, Mackenzie's mild manner and friendly personality has shone through at Carrington, and he admits that his love of the game is something which has helped him settle in a foreign country.
"I have grown to love the sport. The whole family gets involved now, my Dad knew nothing about the sport before I started playing, now he's Rugby mad.
"Moving to Coventry kind of came out of the blue. Someone just asked do you fancy coming over to play, having played well for the Canadian sevens I thought I would give it a shot. My thinking was, if it didn't work out I would just head home, fortunately it did and I've ended up at a huge club like Sale."
After an impressive couple of years as an international, Mackenzie then got the chance to play on the world stage, starting in all four of Canada's group games in the 2011 World Cup.
"The Maple Leafs" managed a win and a draw, with Mackenzie scoring the clinching try over Tonga.
Spirits were high after that impressive showing, something which not only got the national press on board, but also inspired supporters to back their national side.
"The World Cup helped the team a lot. We got some really good coverage after the Tonga win, which definitely helped to get people watching the game.
"Recently we have been playing at a much bigger stadium over in Toronto, BMO Field, with 24,000 fans coming to see our last game."
Now a mainstay of Canada's squad, Mackenzie is excited at the prospect of testing himself against the world's greatest sides once again, when the World Cup comes to Britain next year.
"We beat America twice in the summer to secure our spot. We really want to test ourselves and get some good results, especially against Italy because we believe we are good enough to get a win against them.
"The plan has always been to build on the 2011 World Cup. A lot of players retired after the tournament, so there's some younger players filling the gaps now. It's just key to get those guys playing as much rugby as possible to give ourselves a good chance."
Let's hope Mackenzie will be one of many Sale featuring the World Cup next year.