Christian McCaffrey surfaced on the 49ers’ practice report Thursday afternoon as being limited by a calf issue.

His arrival on the report obviously conjures up nightmares for the 49ers from a year ago, when he was surprisingly scratched from their season opener and missed two months with Achilles tendinitis .

McCaffrey, the 2023 NFL Offensive Player of the Year, has looked back in superstar form as a steady presence in practice from the spring through training camp.

He did not speak to the media Thursday during his usual scheduled time. The 49ers open their season Sunday in Seattle against the Seahawks (1 p.m., Fox).

Brock Purdy and George Kittle both spoke after practice about how great McCaffrey has looked and neither indicated that he may have suffered a setback. A team spokesm

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