49ers Injury Picture: Depth Tested Despite 4-0 Start

The San Francisco 49ers hold a 4-0 record following a 24-14 victory over the Denver Broncos on Oct. 4, but head coach Kyle Shanahan's roster depth is facing growing tests across several positions. The wide receiver room has absorbed setbacks to Mike Evans and Christian Kirk, leading the team to elevate veteran Brandin Cooks. Meanwhile, tight end George Kittle has provided offensive stability after returning from an Achilles injury suffered in January.

Injuries have mounted across other units as fullback Kyle Juszczyk hyperextended his knee, while edge rusher Nick Bosa remains sidelined by a calf issue. Linebacker Marques Sigle will miss time with a high ankle sprain, though Mykel Williams returned to practice from the PUP list. Despite the absences, San Francisco's offense continues to produce at an elite rate behind quarterback Brock Purdy.