<page_title> Izak van der Merwe </page_title> <section_title> Singles performance timeline </section_title> <table> <cell> 113 <col_header> 2011 </col_header> <col_header> 0–0 </col_header> <col_header>  </col_header> </cell> </table>
Van der Merwe has a career high singles ranking of 113 in 2011.