India's Sania Mirza slipped eight places down to 92nd in the latest Women's Tennis Association (WTA) rankings issued on Monday.
Sania, who is currently nursing a wrist injury, has 745 ranking points in her kitty.
Meanwhile, Somdev Devvarman gained a place to be ranked 120th in the men's singles rankings.
Somdev, who is playing the qualifying rounds at the Sony Ericsson Open tennis championships, has a total of 447 points.
Prakash Amritraj, the US-based Indian, also climbed one place to 217th with 209 points.
In the men's doubles individual rankings, Leander Paes (5610 points) and Mahesh Bhupathi (4930) were static on sixth and eighth positions respectively.