Garafolo: Biadasz injury considered long-term

Key Points:

• Chargers center Tyler Biadasz suffered a severe knee injury, including ACL damage, during joint practices with the 49ers and is expected to miss the 2026 season, creating a significant gap in the Chargers' offensive line.
• Running back Kaelon Black has emerged as the 49ers' lead back in Christian McCaffrey's absence, impressing coaches and teammates with his strong preseason performance and could solidify himself as the team's RB2.
• Eagles running back Tank Bigsby has returned to practice after a toe injury and is expected to serve as the No. 2 back behind Saquon Barkley, while rookie WR Makai Lemon remains sidelined with a hamstring issue.
• Jonathan Greenard of the Eagles may miss Week 1 due to a pec injury, potentially easing the matchup against the Commanders; meanwhile, Alvin Kamara of the Saints is sidelined for at least a month with an MCL injury, boosting Travis Etienne's role.
• Raiders rookie quarterback Fernando Mendoza impressed in preseason but is being urged by coaches to improve his timing and anticipation as Kirk Cousins remains the likely Week 1 starter.