For the New England Patriots, this isn't that new. But for the San Francisco 49ers, this is a unique position to be in.
The Patriots and 49ers are the only two undefeated teams remaining entering Week 7 of the NFL season, and the two franchises have had some differences over their recent history.
This is the fourth time that New England has started a season 6-0, with all of those campaigns coming since 2004. The last time it opened with six straight wins was 2015. Meanwhile, San Francisco is 5-0 for the first time since it won 11 straight games to begin the 1990 season.