Cox was yanked from a 41-17 loss to top-ranked Florida after throwing three interceptions, and Richt declined to say Sunday night whether the move is permanent. Sophomore Logan Gray also struggled, throwing an interception that was returned for a touchdown.
Another possible option is freshman Aaron Murray, who has yet to play and would lose a redshirt season.
Richt said Murray - who missed practice time earlier this season with triceps tendonitis and has not played - "is very healthy, even with his arm right now. He's off the injury list completely."
Richt says he'll likely announce any lineup changes Tuesday.
"I'm not going to say anything right this second because we just got done looking at the film on both sides of the ball," Richt said . "We might take a little bit more time to make any determination on that, and there will also be a competition factor in some positions as to who might start."
One bit of good news for the struggling Bulldogs: Injuries to star receiver A.J. Green and offensive lineman Clint Boling don't appear to be serious.
Richt said any personnel decisions made will be driven by whatever gives Georgia its best chance to win this year.
Georgia plays its first home game in five weeks Saturday with a drastically different aura around it than when it nearly upset fourth-ranked LSU on Oct. 3.
The Bulldogs have gone from a top-20 team to one that needs to win two of its final four regular-season games to become bowl-eligible.
"We have to finish this season out, and not end up under .500," defensive end Demarcus Dobbs said after Georgia's loss to Florida. "Our motivation has to be playing our guts out for these seniors and playing in a decent bowl game."