Matt Lively reports on three things that will help the San Francisco 49ers seal a sweep over the Seattle Seahawks on Sunday.

The season debut of Christian McCaffrey helped make the San Francisco 49ers' offense look more like it did a year ago than it did in an up-and-down first half of the season. McCaffrey's presence helped create space in the passing game for the rest of San Francisco's playmakers,

The San Francisco 49ers have a new weekly problem to solve now that running back Christian McCaffrey has returned from Achilles tendinitis. While it's certainly a positive that the reigning Offensive Player of the Year is back in their lineup,