Why Christian McCaffrey has nothing but faith in ‘awesome’ 49ers QB Mac Jones

SANTA CLARA — Christian McCaffrey has been an offensive security blanket for whoever has been under center for the 49ers, and this week it’s likely to be Mac Jones.On Wednesday, as Brock Purdy recovers from shoulder and toe injuries, the All-Pro running back shared that adjusting to a new quarterback under center has a lot to do with the other 10 players on the field.“I think everybody just has to do their job,” McCaffrey said. “And that’s whether Brock is playing or not. It just comes down to everybody executing at a high level and keeping it that simple, not trying to do anything extremely special. Just have to have really good execution at all times, but that’s pretty consistent every week.”Jones has 49 starts in his NFL career, 42 with the New England Patriots and seven as a Jacksonville Jaguar. The former first-round pick’s best season was his rookie year, finishing with a record of 10-7, completing 67.6 percent of his attempts and a 92.5 quarterback rating.“Mac has been awesome,” McCaffrey said. “He’s been such a good guy in the locker room, such a good guy on the field and he [shone] a...