India, Sept. 6 -- San Francisco 49ers' running back Christian McCaffrey gave limited participation during Thursday's (September 4) session, as listed by the official injury report. This raised concern bells given his calf issue last season, which limited him to playing no more than four games.

"The latest on #Chiefs WR Hollywood Brown, #Chargers RB Najee Harris, and #49ers RB Christian McCaffrey - a surprise addition to the injury report entering Week 1. @gmfb @nflnetwork," NFL insider Tom Pelissero posted on his social media handle.

"I do not get the sense based on the conversations I've had so far that there are alarm bells going off about Christian McCaffrey at this point," he said during the interview, as reported by The Sporting Ne...