Former champion Advani lost his way after winning the first two frames to go down 2-3 against the Singaporean ace in an interesting battle.
India's poster boy of cue sports Advani, who has captured the title in the short and long format and has a total of eight billiards crowns under his belt, then ouplayed Adian Murray and Brain Harvey with a 3-0 scoreline respectively.
Former Asian Billiards champion Alok Kumar had a clinical day winning all his matches 3-0. Ahmedabad cueist Dhvaj Haria also won all his matches, loosing only a frame.
All Indians in the fray cruised along with easy wins in the league stages and are half way through to qualifying for the last-32.
The World Championship, which started on October 20, has invited 55 entries from eight countries, 11 groups of five each.