Saina picked up the blisters during the Australian Open Super Series, a tournament she had won.
The Malaysian, 31, has will miss the Glasgow Commonwealth Games due to a thigh injury.
Saina said that win is “very very special” for her as she overcome the pain owing to blisters on her foot.
Saina clinched the Australian Open after beating Spain’s World No. 11 Carolina Marin 21-18, 21-11 on Sunday.
Sixth-seeded Saina prevailed 21-19 16-21 21-15 in a marathon match, which lasted an hour and 16 minutes.
Saina defeated Hirose 21-18 21-9 to set up a clash against world no. 2 Chinese Shixian Wang in semis.
Saina and Sindhu cruised into the quarters after posting comfortable wins in their second round matches.
Gutta said that India is in dire need of second formidable doubles pair after her and Ashwini.
The ace shuttler bowed out of the women’s singles event after going down to China’s World No. 1 Li Xuerui.
Saina had an easy outing against K.Gilmour, but will face world no.1 Li Xuerui of China in the next match.
The three-time champion started her campaign on a winning note, but it was an early exit for her teammates.
The BWF’s proposal to changing the scoring system had come under a lot of criticism from players and coaches.
Japan beat Malaysia 3-2 to clinch maiden Thomas Cup title at the Siri Fort Indoor Stadium in New Delhi.
Chief national badminton coach Pullela Gopichand reflected on net gains and losses from Uber Cup.
The Danish shuttler is confident that his team has enough firepower to win a medal at the Thomas Cup.