The 2019 NFL season has already been an interesting one for backup players.
In Tennessee, for example, Ryan Tannehill entered the season behind Marcus Mariota—now he's the starter with five wins to his name.
Performance isn't the only reason backups get into games, of course. Necessity because of injuries and otherwise has and will continue to cause teams to throw reserves into action.
The following players are backups with high upsides who figure to get good doses of action over the last month of the season for a variety of reasons. With enough playing time, they should turn some heads while shocking the opposition.