Kyle Shanahan’s 49ers offense has answers for everything a defense throws at it (paywall)
“The 49ers’ favorite 4-strong (four receivers to one side) concept is a snag concept with a lead blocker for the swing route. They added some window dressing by moving their pieces around. Christian McCaffrey ran the spot route and Deebo Samuel ran the swing route.
The tweak that fooled the Eagles a couple of times in this game was having Brandon Aiyuk run a speed out to the weak side. Aiyuk usually runs a slant on this concept.
The Eagles were concerned with the 49ers’ run game, so they were in their “tite” front with five on the line of scrimmage and ended up rushing both outside linebackers.