Both Christian McCaffrey, Brian Robinson Jr. prepare as 49ers’ Week 1 starters

SANTA CLARA — Running back Brian Robinson Jr. did not come to the 49ers to be a starter.But after starting 37 of the 41 NFL games he appeared over three seasons with the Washington Commanders, he only knows one way.“I’ve been a starter in this league,” Robinson said as the 49ers get set to face the Seattle Seahawks in the regular-season opener on Sunday. “With that being said, I know what it takes to prepare like a starter all the time. Nothing changes.”What is subject to change is the status of 49ers starting running back Christian McCaffrey. The 49ers listed McCaffrey as questionable with a calf injury. His status is not likely to be known until approximately 90 minutes before kickoff on Sunday.“I prepare like I’m going to start every game, regardless of Christian, him being a starter here,” Robinson said. “This is how I got to prepare — prepare like I’m ready to start at any given moment. That’s how you become a starter in this league.”Likewise, McCaffrey said on Friday he is taking the approach that he will be on the field when the season begins. McCaffrey missed the first eight games of last...