San Francisco 49ers defensive end Nick Bosa pulled his calf during practice and is expected to miss a few weeks, per ESPN and NFL Network. The injury occurred during Thursday's practice, according to reporting from ESPN's Adam Schefter and NFL insider Ian Rapoport.
Bosa will miss at least Week 3 against the Arizona Cardinals. The 49ers are still evaluating whether to place the five-time Pro Bowl selection on injured reserve, which would sideline him for a minimum of four weeks. Pro Football Talk and CBS Sports both noted that the IR decision remains pending.
One report indicated Thursday as the injury date, while another cited Friday practice, though the discrepancy may reflect different sources or timing of when the injury was discovered versus when it occurred.