Running back Christian McCaffrey ‘17 had a historic performance in the 49ers’ 41-23 win over the Seahawks, amassing 136 total yards and scoring one touchdown. He set the tone for the offense with a 68-yard rush with eight minutes left in the first quarter, resulting in a receiving touchdown for McCaffrey a few plays later. During the 68-yard rush, Christian McCaffrey reached a top speed of 20.80…