Third seed Joshna was in fine touch as she made short work of Selena Shaikh of Australia 11-5 11-5 11-2 in the opening round of the USD 15,000 event.
However 12th seed Sachika Ingale made an early exit following a tame first round defeat against sixth seed Amanda Landers Murphy of New Zealand in straight games.
She was outplayed 7-11 2-11 2-11 by the Kiwi player
In the men's section, unseeded Kush, a trainee at the Indian Squash Academy, kept his hopes alive with another encouraging display against Kashif Shuja of New Zealand. He emerged victorious with a 8-11 11-3 11-6 11-3 scorline.