Hong Kong's Ng On-yee made a good start to the defence of her World Women's Snooker Championship title today ©Getty Images

The top four-ranked players all won their opening two matches 3-0 as action begun today at the World Women's Snooker Championship in Bangkok.

In Group One, world number two Ng On-yee of Hong Kong begun the defence of her title with a win over home player Panchaya Channoi at the Thai capital's Hi-End Snooker Club.

She followed that up by beating India's Pooja Galundia.

World number one Reanne Evans, the 11-time champion, opened her Group Two campaign with victory over Iran's Zeinab Shahi before defeating Thailand's Thitaporn Nakkaew.

Fellow Englishwoman Rebecca Kenna, the world number three, saw off India's Devanshi Galundia and Iran's Parisa Darvishvand to put her well on course for qualification from Group Three.

World number four Nutcharut Wongharuthai of Thailand leads the way in Group Four following wins over Australia's Theresa Whitten and Singapore's Tan Bee Yen.

Action in Bangkok is due to continue tomorrow.

The conclusion of the group matches will be followed by the last-32 ties.