Jaguars rookie quarterback will start against the Patriots on Thursday night. David Garrard has been declared out by coach Jack Del Rio because of continued back issues. Garrard tweaked his back during practice Thursday and hasn't done anything on the field since. Gabbert started the team's scrimmage Saturday and was solid despite a few dropped passes. "It's going to be fun," Gabbert said. "Those reps are going to be extremely valuable, on film after the game just to see what was going on. That will be the first live game I've been in in this league, so it will be fun. There are going to be mistakes made, but we've just got to learn from those and correct them the next week."