The 49ers Become 1st Team in 21 Years to Allow No Sacks in 1st 4 Games

The 49ers become 1st team in 21 years to allow no sacks in 1st 4 games

SANTA CLARA, Calif. (AP) — Any questions about the San Francisco 49ers' offensive line after getting overwhelmed in two late-season losses to Seattle last season have been quieted with an impressive start this season.

NFL Week 4 reaction, San Francisco 49ers remain dominant, a Minnesota Vikings debate and more – SKOR North

Jeremiah Sirles, Alex Boone and Phil Mackey break down Week 4 in the NFL! 01:00 - The boys celebrate a great weekend for their college football teams 03:30 - San Francisco 49ers offense hasn’t allowed a sack all season; How does Kyle Shanahan produce such great offense every year? 17:00...