London Games bronze medallist Saina, who had retired midway through her first match at Uber Cup Final due to a groin injury, couldn't match Japan's world no 20 Aya Ohori and lost 21-16, 21-14 in the opening round.
Saina showed signs of regaining her form on her way to a sensational win over Chinese world number 9 He Bing Jiao
The absence of double Olympic medallist P V Sindhu, London Games bronze medallist Saina Nehwal and men's doubles pair of Chirag Shetty and Satwiksairaj Rankireddy also hurt India's prospect as the team cut a sorry figure at the team-tournament.
The unseeded Indian beat the 11th seed 21-11, 13-21, 21-7 in a second round match that lasted an hour and two minutes.
Saina, who has been battling illness and injuries, is going through a bad patch, having lost six times in the first round this season.
Summary of sports events and persons who made news on Sunday.
A summary of sports events and persons who made news on Tuesday
The biggest upset of the day was produced by Hong Kong's Cheung Ngan Yi, who knocked out Olympic champion and last year's finalist Carolina Marin 21-12, 21-19, in a 48-minute clash.