Head coach Kyle Shanahan indicated some schematic changes may be necessary, especially once defensive tackle Javon Hargrave went down and dramatically altered the strength of the 49ers’ pass rush on the defensive front. One of those schematic changes popped up in Sunday’s win over the Patriots when the 49ers started blitzing heavily.

The Patriots' Week 4 loss was on the offense, but the blowout was on a defense once expected to perform as an elite unit.

The New England Patriots came into Sunday’s game against the San Francisco 49ers as the biggest underdogs in the NFL in Week 4. They didn’t even come close to proving oddsmakers wrong in an ugly 30-13 loss on the road.