If he is activated via 'standard practice squad elevation, he takes a roster spot away from another player. The other is being elevated to the active roster via 'standard practice squad elevation.' If he is signed to the active roster, he can be designated as the 'third-team' emergency quarterback and therefore not take a game-day roster spot away from another player. One is being signed to the active roster. There are two ways Rourke could be available.
Rookie Nathan Rourke is on the Jaguars' practice squad. The Jaguars have two quarterbacks on the active roster, Lawrence and Beathard.
