have Bob Bryan and Samantha Stosur both been world No. 1 in doubles?
Bob Bryan: Robert Charles Bryan (born April 29, 1978) is an American male professional tennis player. Samantha Stosur: Samantha Jane "Sam" Stosur ( ; born 30 March 1984) is an Australian professional tennis player. Samantha Stosur:  She is a former world No. 1 in doubles, a ranking which she held for 61 weeks, and a former world No. 4 in singles.
i don't know