In March of 2015, the Buffalo Bills signed a free agent quarterback who had been primarily responsible for watching Joe Flacco lead the Baltimore Ravens to several playoff appearances. He wasn’t given much of a chance to beat out former first-round pick EJ Manuel or veteran trade acquisition Matt Cassel for a starting job, but had a good chance of making the team as a third quarterback who could factor in to some gadget plays.
Fast forward two-and-a-half years. That same quarterback is coming off of his second Pro Bowl appearance, but the Bills have yet to end their playoff drought.