Canadians follow similar sports to America with a lot more (ice) hockey and the national sport being lacrosse.
The Canadian Football League (CFL) is the professional gridiron league. Its rules vary from those used down south in the U.S. These rule changes are supposed to speed up the game making it more acceptable for outsiders not used to all the time outs and changeovers.
The local team is the Toronto Argonauts (or Argos for short). They play at the Rogers Centre in Downtown T.O. When I went to a game they were playing against their main rivals the Hamilton Tiger-Cats.

Baseball is also moderately popular with the Toronto Blue Jays playing in the Continental Major League Baseball competition. The division they are in means they often played against well known teams like the New York Yankees and the Boston Red Sox. Some people struggle to support the Jays because of their record of continuing to fall short of the playoffs in recent seasons. The game in the pic was against the Tampa Bay Devil Rays.