SANTA CLARA, Calif. — The San Francisco 49ers placed All-Pro running back Christian McCaffrey on injured reserve because of his lingering calf and Achilles tendon injuries. The move made Saturday means McCaffrey will miss at least four more games after already sitting out the season opener. He missed only one game combined in 2022-23 — a meaningless Week 18 game last season for San Francisco when he had a sore calf. Now San Francisco will likely rely heavily on Mason, a former undrafted free agent out of Georgia Tech who had 83 carries his first two seasons. San Francisco also elevated safety Tracy Walker III from the practice squad for Sunday’s game against Minnesota.

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Persons: Christian McCaffrey, McCaffrey, Jordan Mason, Mason, Frank Gore, Isaac Guerendo, Patrick Taylor Jr, Guerendo, Taylor, Tracy Walker III Organizations: San Francisco 49ers, Jets, NFL, Niners, New York Jets, Minnesota, Carolina, San, Georgia Tech, 49ers, Seattle, Green Bay Locations: SANTA CLARA, Calif, Seattle, San Francisco’s, San Francisco, Francisco, Green