<page_title> Chronological summary of the 2011 Pan American Games </page_title> <section_title> Day 8 – October 21 </section_title> <table> <cell> Tennis <col_header> Gold Medalists </col_header> <col_header> Sport </col_header> </cell> <cell> Women's Singles <col_header> Gold Medalists </col_header> <col_header> Event </col_header> </cell> <cell> United States <col_header> Gold Medalists </col_header> <col_header> NOC </col_header> </cell> <cell> Women's Doubles <col_header> Gold Medalists </col_header> <col_header> Sport </col_header> </cell> <cell> Argentina <col_header> Gold Medalists </col_header> <col_header> Competitor(s) </col_header> </cell> <cell> Mixed Doubles <col_header> Gold Medalists </col_header> <col_header> Sport </col_header> </cell> <cell> Ana Paula de la Peña Santiago González <col_header> Gold Medalists </col_header> <col_header> Event </col_header> </cell> <cell> Mexico <col_header> Gold Medalists </col_header> <col_header> Competitor(s) </col_header> </cell> </table>
The United States and Argentina won the women's singles and doubles events respectively, while Ana Paula de la Penã and Santiago González of Mexico won in Mixed Doubles tennis.