mns <code>player</code>, <code>rating_colley</code> (if
<code>keep_rating = TRUE</code>) and <code>ranking_colley</code> (Colley <a href='rating-ranking.html'>ranking</a>
computed with <code><a href='round_rank.html'>round_rank()</a></code>).</p>
    <h2 class="hasAnchor" id="details"><a class="anchor" href="#details"></a>Details</h2>

    <p>This rating method was initially designed for games between two
players. There will be an error if in <code>cr_data</code> there is a game not between
two players. Con