David Garrard (left) looks for a receiver Thursday. Now, he’ll look for a team. (John Raoux / AP)

Rookie Blaine Gabbert will back up McCown in the Jags’ opener against the Tennessee Titans on Sunday, according to Fox’s Jay Glazer. The team does not have a third quarterback on the roster.

The move is a bold one , but Coach Jack Del Rio did the same thing in 2007 when he cut Byron Leftwich on Sept. 1 and named Garrard the starter.

Garrard, who is signed through 2014, has a base salary of $8.075 million for this season and if he were on the 53-man roster Saturday, his salary would have become guaranteed.