By Patrick Andres Here’s which storylines to keep an eye on Saturday, Sunday, and Monday. The most closely followed month on the American sports calendar is finally here. After a chaotic season that included tweaks to the postseason format after Bills safety Damar Hamlin’s scary injury in Week 17, the NFL has its 14-team playoff field. It includes old faces, like Buccaneers quarterback and elder statesman Tom Brady, and new blood, like the upstart Jaguars and Giants. Here is one trend to keep an eye on in this weekend’s six wild-card games. Seahawks at 49ers: Which unlikely playoff quarterback…