Packers and Bears clash, Philip Rivers returns and will the Broncos ever lose? Five things to know about Week 16

By Andy Scholes, CNN (CNN) — As the calendar flips toward Christmas, the NFL kicks the pressure up another notch. Saturday games are back, playoff math is everywhere, and for many teams it’s simple: Win now or start planning January vacations. Here are five things to know heading into a pivotal Week 16. Packers-Bears: A