The Rams' third preseason game will be on the road against the New England Patriots this Thursday. But Saturday night, against the Cleveland Browns, starting QB (for now) AJ Feeley injured his thumb, and was removed from the game. And since the next game vs. the Patriots is Thursday (instead of Saturday), it will only give Feeley four more days to heal.
It is logical to believe, especially after Sam Bradford's questionable performance Saturday, that the Rams will keep Feeley on the bench, to avoid further injury. The third preseason game is typically the game where the starters get the most playing time, it is sometimes referred to as the "dress rehearsal game". Bradford will likely play for over half of the game, into the 3rd quarter. If Bradford is going to start week 1 (Sept.12th) against Arizona, then this is his best (maybe last) chance to claim that starting job.