49ers RB Raheem Mostert runs over Packers with 220 yards, 4 TDs

SANTA CLARA, Calif. — To take the biggest step toward completing one of the most dramatic turnarounds in NFL history, the San Francisco 49ers did on Sunday what they’ve done so many times throughout the season: They rode the wave provided by an unlikely hero.

With Raheem Mostert, the journeyman running back/accomplished surfer, putting together one of the most dynamic rushing…