Confirming the news, the foreign coach said he felt responsible for Sindhu's disappointing start to the season and that the Indian had asked for a change.
Kunlavut beat Olympic champion Axelsen of Denmark in 64 minutes to claim his maiden Super 750 tournament title.
Commonwealth Games bronze medallists Gayatri Gopichand and Treesa Jolly also lost 9-21, 16-21 to sixth-seeded Chinese Zhang Shu Xian and Zheng Yu.
World number 12 Sen squandered an opening game advantage to go down 21-15 10-21 13-21 to home favourite Christie in 62 minutes.
The 20-year-old dished out her repertoire of attacking and defensive shots during a 15-21 21-16 21-12 win over the world number one Japanese.
Chirag confirmed that the pair had decided to concede the match, as Satwik pulled his left hip adductur.
The 29-year-old from Odense won eight titles in 2022, including the World Championships, All England and World Tour Finals.
Srikanth squandered a 14-5 lead in the second game after losing the opening to go down 14-21 19-21 to the world number 1.
Marin was in a different zone before sustaining an ACL injury in her right knee during the 2019 Indonesian Masters final in January.
Sindhu acknowledged the support she received from the foreign coach after the reverse in the Malaysia Open, saying making a comeback itself is difficult after...
The 21-year-old from Almora feels that the time is just right for him to push the envelope further in another busy season.
Former world champion and double Olympic medallist PV Sindhu will face her last edition's nemesis Supanida Katethong in the opening round of the BWF World Tour...
