Middle infielder for the San Francisco Giants, Christian Koss joined Murph & Markus this morning to share his perspective on his walk up song, his first career grand slam, and what it's like to have Buster Posey as President of Baseball Operations

<p>Middle infielder for the San Francisco Giants, Christian Koss joined Murph &amp; Markus this morning to share his perspective on his walk up song, his first career grand slam, and what it's like to have Buster Posey as President of Baseball Operations</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>

Murph & Markus Podcast

5-14 Christian Koss joined Murph & Markus this morning to share his perspective on his walk up song, his first career grand slam, and what it's like to have Buster Posey as President of Baseball Operations