Saketh Myneni was also unchanged at number 170 and was followed by Ramkumar Ramanathan (248).
In the doubles list, Rohan Bopanna was India's best-positioned player at number nine and was followed by Leander Paes (41) and Purav Raja (93). All three players were unchanged.
In the WTA rankings, Sania Mirza continued to be joint world number one with Swiss partner Martina Hingis. In the singles chart, Ankita Raina rose a rung to 263 while Prerna Bhambri lost a place to be 417.