Saina, whose previous best on the chart was the sixth spot she attained last year, surprised one and all by becoming the first Indian woman to reach the semi-finals of the prestigious All England Super Series.
Saina eventually lost the semis to Tine Rasmussen of Denmark.
Riding on her fantastic show, the Indian gained a couple of spots in the latest list with 58516.7646 points in her kitty.
Chinese shuttlers dominate the top half of the women's rankings with Wang Yihan leading the pack followed by Wang Lin, Xin Wang and Jiang Yanjiao respectively.
In the men's rankings, India's Chetan Anand dropped a rung to 10th but P Kashyap gained one spot to be 29th. Arvind Bhat remained static at 36th but Anup Sridhar slipped to 40th, a loss of one position.
In the mixed doubles rankings, Jwala Gutta and V Diju's pair slipped one spot to 10th in the latest list.