Serena Williams is an athlete.
Serena Williams . In total , she has been world no. 1 for 319 weeks , which ranks her third in the Open Era among female tennis players . She has won the Laureus Sportswoman of the Year award three times ( 2003 , 2010 , 2016 ) , and in December 2015 , she was named Sportsperson of the Year by Sports Illustrated magazine .