Allgeier played in a near even split with Caleb Huntley after Patterson went down in Week 4. The matchups are one reason for uncertainty, the workload is a second. Next week they face a 49ers defense that may just be the best in football. This week they'll face a Tampa Bay defense that hasn't been very good against the run, but we think they'll be better. Just don't think Allegeier is quite a plug-n-play addition just yet. They rank top six in rush attempts, rushing yards, rushing touchdowns, and yards per rush attempt despite playing two of their four games against very good run defenses in the Saints and the Rams. With Cordarrelle Patterson and Damien Williams both in injured reserve, rookie Tyler Allgeier has an excellent opportunity in a Falcons offense that has been surprisingly good running the ball.