Bai Yulu, defending Snooker Shoot Out champion Mark Allen and Shaun Murphy were notable second-round casualties in Leicester on Friday.
Chinese woman Bai achieved an impressive victory in a televised ranking event match for the first time on Friday over Jamie Clarke, but tasted defeat to compatriot Zhang Anda by a 65-12 score.
Allen had won this tournament last December, but crashed out at Mattioli Arena after a 36-8 defeat to Si Jiahui.
Shaun Murphy had a day to forget after he lost 73-0 to Dave Gilbert.
Neil Robertson had no such issues despite a nervy 59-49 win over Jackson Page, who missed a yellow for victory late on.
