Jordan James In Line For Backup RB Duties If Kaelon Black Sits

San Francisco 49ers running back Jordan James is positioned to serve as the team's primary reserve back behind starter Christian McCaffrey for Sunday's Week 2 game against the Miami Dolphins. Rookie tailback Kaelon Black is listed as questionable with a groin injury that limited him in practice on Thursday and Friday. If Black is unable to play or remains restricted, James would absorb the No. 2 running back reps and provide backfield depth for San Francisco's offense.