Advertisement after Entry Title, before Entry Content

functions.php

<?php
add_action( 'genesis_entry_header', 'cb_advertisement_before_content', 20 );
function cb_advertisement_before_content() { ?>
  <div class="entry-advertisement alignleft">
      <img src="https://placeholdit.imgix.net/~text?txtsize=33&txt=300×250&w=300&h=250" alt="Please replace me" width="300" height="250" />
  </div>
<?php }