49ers Notebook: Kaelon Black shines; Brock Purdy pays up; No setbacks for George Kittle; Avoiding a trap game vs. Dolphins

Rookie running back Kaelon Black showed he is ready to take on whatever role the San Francisco 49ers ask of him. Black finished with 14 carries for 65 yards in Week 1's win over the Los Angeles Rams, four more carries than starter Christian McCaffrey.

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