The Big Hit: Murph and Markus LIVE FROM HAWAII share their concern level of the 49ers injuries and Purdy's evolution in the Shanahan system.

<p>The Big Hit: Murph and Markus LIVE FROM HAWAII share their concern level of the 49ers injuries and Purdy's evolution in the Shanahan system.</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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