<P> Venus Williams and Serena Williams (born June 17, 1980, and September 26, 1981, respectively) are professional tennis players and sisters who have faced off 29 times in professional tournaments, most recently in the 2018 Indian Wells Masters 1000 event . Serena leads their head - to - head 17--12 . </P> <P> Both Williams sisters have been ranked World No. 1: Venus for a total of 11 weeks, beginning in February 2002; Serena for a total of 316 weeks, beginning in July 2002 . </P>

How many times have the williams sisters played each other