Ruan Roelofse is the number-two ranked SA doubles player 176th.
Meanwhile, Kevin Anderson moved up six places to 56th in the singles rankings.
The strong-serving Anderson achieved a career-high 10th ranking in October 2015.
SA’s number two singles player, Lloyd Harris improved two spots to 260th.
Chanel Simmonds is the top South African on the women’s singles rankings at 355th. Simmonds is also the top women’s doubles player at 242nd.