Christian McCaffrey remains optimistic about playing in Week 2 despite ongoing calf and Achilles tendon issues, declaring, 'My mentality is I'm playing this week.' After missing the season opener against the New York Jets, he has been a limited participant in practice but insists on maintaining a positive outlook, stating that being uncertain is not conducive to performance. Although the 49ers coaching staff, including head coach Kyle Shanahan, are cautious due to the potential risks of Achilles tendinitis, they have not considered placing him on Injured Reserve. The team successfully managed without him in the opener, with backup Jordan Mason rushing for 147 yards. McCaffrey acknowledges the challenges of his injury but views his decision to sit out as a strategic move for long-term benefit. He emphasizes that he is focused on recovery and is determined to contribute when able.