Mumbai, April 17: Former World Champion and India No. 4 Rupesh Shah of Gujarat, after a hesitant start, was in full flow and rolled in a break of 399 to brush aside the challenge from Mumbai's talented youngster Sumer Mago in a pre-quarterfinal match of the Rs 10 lakh prize-money CCI Classic Invitation Billiards (time format) Championship 2023 here on Monday.