What happened: The collision with an SUV occurred near his Northern California home during summer break. Shanahan required more than 40 facial stitches and also suffered a severe concussion.
Why it matters: The timing places an unusual constraint on San Francisco's football operation as preparations begin for the 2026 season. His physical limitations may require adjustments to his on-field workload during camp.
By the numbers: The crash occurred July 14. Shanahan fractured three ribs, his nose and his hand and required more than 40 facial stitches.
What to watch: Shanahan's participation level when practices begin will clarify how the 49ers divide his camp responsibilities.