He played for the BC Lions, Ottawa Redblacks and the Edmonton Eskimos of the Canadian Football League (CFL).
True freshman Taylor Heinicke would play the rest of the game, later becoming the Monarchs' starting quarterback.
While DeMarco did not get drafted by a National Football League team, he signed a two-year deal with the BC Lions on May 14, 2012.
On September 15, 2013, DeMarco (while in relief of an injured Lulay) threw his first career touchdown, a 14-yard pass to Marco Iannuzzi against the Montreal Alouettes.
[3] DeMarco would struggle the following weeks, eventually getting replaced by Buck Pierce during the October 19 game against Edmonton.
Lulay returned as starter for the playoffs, but the Lions were eliminated by the eventual Grey Cup Champions, Saskatchewan.
DeMarco only appeared in 4 games in the 2014 CFL season before suffering a season-ending ACL tear in his left knee.