The Big Hit: Murph & Markus debate if the 49ers can beat the Bears on Sunday and which RB needs to step up the most.

<p>The Big Hit: Murph &amp; Markus debate if the 49ers can beat the Bears on Sunday and which RB needs to step up the most.</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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