Who had a better single career ranking, Rohan Bopanna or Jim Grabb ?
Rohan Bopanna:  His singles career high ranking was World No. 213 in 2007 and his career high ranking in doubles was World No. 3 on 22 July 2013. Jim Grabb: Jim Grabb (born April 14, 1964) is an American former professional tennis player. Jim Grabb:  Grabb's best singles ranking was World No. 24, a ranking he achieved in February 1990.
Jim Grabb