NFL's new postseason overtime rule means game doesn't end with a TD on first possession - NBC Sports
NFL overtime rules for playoffs, explained: How is winner determined?
Garoppolo's late heroics help send 49ers into playoffs - The San Diego Union-Tribune
The Numbers Behind the NFL's Crazy Playoffs - WSJ
NFL overtime rules 2018: How does it work?
Why the NFL playoffs are perfect just the way they are - Sports Illustrated
NFL Overtime Rules: Regular Season vs. Playoff Rules, Possession, Scoring, and More
Herbert's heroics not enough as Chargers fall, miss playoffs - The San Diego Union-Tribune
A brief look at the NFL's 16 rule change proposals - Dawgs By Nature
NFL overtime playoff rules were changed. Here's how they work now.
NFL approves overtime rule change for postseason