The 6 Red World Championship got under way on Monday with 48 players vying for the title in Bangkok.
The invited field has an international flavour, as well as boasting an array of both professionals and amateurs from all around the world divided into eight groups of six players each.
Defending champion and home favourite Thepchaiya Un-Nooh, alongside three-time world champion in the six reds format, Mark Davis, both feature in Group A and each won their first two bouts on the opening day in Thailand.
Snooker played under the six reds guise is essentially the same as the traditional game but with fewer reds and a couple of additional tweaks to the rules.
2015 winner Stephen Maguire won his initial outing against New Zealand amateur Daniell Haenga in Group G while another former champion in world no.1 Mark Selby had mixed fortunes as he won one and lost one – a 5-4 thriller to Luca Brecel.
The likes of Stuart Bingham, Ricky Walden, Ding Junhui and Thai hopefuls James Wattana, Noppon Saengkham and Akani Songsermsawad are also in the draw.
The top four players from each group qualify for the last 32, which will subsequently transform the competition into a straight knockout format.
The round-robin phase runs until Wednesday.