NFL News: Four teams submit seven proposals for rule changes - Niners Nation
NFL owners adopt new playing rules
49ers news: Potential NFL rule changes for the 2023 season and key offseason dates to know - Niners Nation
At NFL owners meeting, a rarity: no complaints about instant replay or the rules - The Boston Globe
NFL: Owners mull cut of regular-season overtime to 10 minutes
2018 NFL Rule Changes - Battle Red Blog
NFL owners meetings will have replay, kickoff rules at top of docket
Eli Manning tells Class of 2020 to embrace the awkwardness of life
NFL owners approve rule change for OT in playoffs