Sindhu reached the ninth spot, to stay two places behind Saina, who remained static at the seventh spot.
The 18-year-old, who reached the finals of Syed Modi International before winning the All India Open Senior Ranking in Kochi, currently has 55752 points, just 3928 points behind the Olympic bronze medallist.
Both Sindhu and Saina will be playing the All England Open Championships from March 4 to 9 next.
Among the men shuttlers, Sourabh Verma made a jump of nine points to reach the 41st spot in the world rankings with Parupalli Kashyap still the best Indian at the 18th place.
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