Qualifier Pratuimula Nanekar beat third seed Kyle Cummings of Goa 8-5 to advance to the boys’ U-12 quarter-finals.
Another qualifier, Mayank Joshi shocked fifth seed Ahaan Shah 7-4, while an unseeded Siddharth Jangbahadur stunned third seed Aditya Sriram by the same margin to enter the boys U-10 quarter-finals.
Thereafter, an unseeded Eshita Singh completed an ominous day for the seeds when she shocked No 8 Akanksha Nitture 8-3 to book her berth in the girls U-12 quarter-finals.
Mumbai Roundup: 9 incidents that took place this week
Photos: Ajay Devgn, Parineeti, Tabu at 'Golmaal Again' trailer launch
Photos: Dipika Pallikal Karthik oozes oomph in bikinis and sarees
Photos: Kareena Kapoor Khan's grand birthday bash
Photos: 'Dangal' girls Sanya Malhotra, Fatima Sana Shaikh's dinner outing