Display Shortcode after Title

Hi Tom,
I’m trying to output a shortcode value below the title using the after title hook, this is what I have so far but it isn’t working:

add_action( 'wpsp_after_title', 'add_ratings_after_title' );
function add_ratings_after_title() {
    echo do_action( '[yasr_overall_rating size="medium"]' );
}

Any help much appreciated.