Saina passed her first test on court, posting a straight-games victory over Kisona Selvaduray. Former World No 1 Srikanth was also in the zone, dismantling compatriot Sourabh Verma.
Sourabh failed to cross the opening hurdle, losing to Kidambi 21-12, 21-11 in two consecutive sets.
Ex-world no. 1 Srikanth left with bloodied nose, BWF says working with Thailand Open for 'comfortable' conditions
Srikanth is scheduled to open his campaign against compatriot Sourabh Verma on Wednesday.
Saina Nehwal, HS Prannoy test negative for COVID hours after positive results, cleared for Thailand Open
Saina Nehwal and HS Prannoy on Tuesday tested negative for COVID-19 hours after returning positive results.
The Badminton World Federation said Kidambi Srikanth is being attended to by a doctor and it is awaiting a medical explanation.
PV Sindhu crashed out of the ongoing Thailand Open in the opening round after losing the hard-fought match against Mia Blichfeldt.
Satwiksairaj and Ashwini stunned the sixth-seeded opponents 21-11, 27-29, 21-16 in the opening round of the showpiece event.
A walkover was given to Kisona Selvaduray of Malaysia, who was to play her first-round match of the Thailand Open against Saina on Tuesday.
Sindhu and Saina didn't participate in Denmark Open Super 750 and SaarLorLux Super 100 -- the only two events which could be conducted after BWF was forced to suspend.
Indian badminton team to start training, get access to physio after all 824 participants clear COVID-19 test
The Indian team, comprising Olympic hopefuls PV Sindhu, Saina Nehwal and B Sai Praneeth, have been allotted training timings.
PV Sindhu gets favourable draw, tough outing for Saina Nehwal as international competition returns in Thailand
World champion PV Sindhu, seeded sixth, will open against Denmark's Mia Blichfeldt in Yonex Thailand Open.
PV Sindhu to make badminton return at Yonex Thailand Open; SAI sanctions travel of her coach, physio
The sports ministry has sanctioned Sindhu's request to have her physio and fitness trainer accompany her at the tournaments.