Sindhu, who clinched the China Open and then reached the finals at the Hong Open, has 68,699 ranking points. She will carry India hopes at the Dubai Super Series Final, a prestigious tournament she qualified for the first time.
Former World No.1 Saina, who is on a comeback trail after recovering from a serious injury, improved a spot after slipping five places to 11th place last week.
K Srikanth, who is out of action since undergoing an injury, slipped a place to World No. 13, while Hong Kong Finalist Sameer Verma jumped 13 places to be World No. 30.
Manu Attri and B Sumeeth Reddy slipped a place to World No. 23rd.