The Big Hit: Murph & Markus preview the 49ers week 2 matchup versus the Vikings and debate if Christian McCaffrey will play on Sunday.

<p>The Big Hit: Murph &amp; Markus preview the 49ers week 2 matchup versus the Vikings and debate if Christian McCaffrey will play on Sunday.</p>

Every weekday morning, KNBR listeners join Brian Murphy and Markus Boucher from 6am-10am only on KNBR!

<p>Every weekday morning, KNBR listeners join Brian Murphy and Markus Boucher from 6am-10am only on KNBR!</p>

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