[5] On October 13, 2014, Stanley was signed to the practice roster of the Calgary Stampeders of the Canadian Football League.
In his second season, Stanley threw a total of twenty touchdown passes (and no interceptions) while winning every game in which he started.
Stanley's SaberCats ultimately advanced to ArenaBowl XXVIII, where they defeated the Jacksonville Sharks 68–47.
In the fourth quarter, Stanley was briefly inserted as quarterback for the SaberCats; his lone pass attempt was caught for a touchdown.
Stanley became the fourth SaberCats quarterback to throw a touchdown pass in an ArenaBowl (following John Dutton, Mark Grieb, and 2015 teammate Erik Meyer).