49ers-Chargers joint practice report: Rookie Kaelon Black shines

Key Points:

• Rookie running back Kaelon Black returned to practice after an adductor injury and impressed during the 49ers' joint session with the Chargers, showing strong running and receiving skills, including an 8-yard touchdown catch.
• Key running backs Christian McCaffrey, Jordan James, and Isaac Guerendo remain sidelined, giving Black a larger role in practice and likely playing time in the upcoming preseason game against the Chargers.
• Veteran wide receiver Mike Evans left practice early with quad tightness but is not expected to have a serious issue, while Christian Kirk continues to recover from a persistent calf injury.
• The 49ers offense had an up-and-down practice, struggling in later stages and failing to score in the two-minute drill, with both coach Kyle Shanahan and QB Brock Purdy noting the need for improvement in fundamentals and consistency.
• Rookie receiver De’Zhaun Stribling stood out with multiple touchdown catches in red-zone drills, demonstrating promise despite some earlier mistakes, while other receivers like Jacob Cowing, DeMarcus Robinson, and Trenton Irwin also contributed positively.