The are expected to start their third quarterback since the beginning of the preseason.NFL Media Insider Ian Rapoport reports, via a team source, that veteran is battling a thigh injury and is to play versus the .The have prepared all Jonathan Vilma Jersey week as if will make his first career start.Davis went undrafted in 2012 after breaking a slew of Brett Favre's records at Southern Mi s. He Taysom Hill Jersey was viewed as a system quarterback with questionable arm strength and size limitations. On the positive Steve Gleason Jersey side, Davis is a plus athlete with enough short-range accuracy to move the chains on slants, curls and cro sing routes.After coming on in relief of Hill last week, Davis took four sacks and unfurled an 81-yard pick-six to safety . Counting the preseason, Davis has completed 55 of 86 pa ses (64.0 percent) for 726 yards (8.4 yards per attempt), four touchdowns, two interceptions and a Kaden Elliss Jersey whopping 13 sacks.If Davis struggles in Tampa, the could turn to former quarterback .Of all the NFL teams in quarterback straits, St. Louis' predicament is the most dire.UPDATE: was declared active for Sunday's game.The latest Bradley Roby Jersey recaps the - game and in Week 2.