Código PHP:
echo "<select name='type' onChange='document.ranking.submit()'>
<option value='entrylist' >Entry System Ranking</option>
<option value='championsrace' >Champions Race</option>
</select>
<tr><td><font size='2'>".$row["playername"]."</font></td><td><font size='2'>".$row["points"]."</font></td><td><font size='2'>".$row["nacionalidad"]."</font></td></tr>";