Though the official rankings will be out only on Thursday next week, the 25-year-old Indian has been assured of her ascent to the top owing to Marin's loss in the last-four stage.

Read more: BAI announces Rs 5 lakh cash reward for Saina, Kashyap

The reigning world champion, who was seeded second, lost to third seed Thai Ratchanok Intanon 21-19 21-23 22-20.

Prakash Padukone had the distinction of being the No. 1 men's badminton player but Saina became the first Indian woman to achieve this feat.

Read more: I lost focus and got nervous, says Saina

Saina plays Japan's Yui Hashimoto in the second semifinal but the Indian ace will be No. 1 irrespective of her result today.

Read more: Saina bows to keep focus in her quest for more success

The London Olympic bronze-medallist has won a staggering 14 international titles in her glorious career, and most recently she became the first Indian woman to make the finals of the prestigious All England Championships in Manchester.

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