O'Sullivan faces battle for Crucible place after shock Belfast defeat

Ronnie O'Sullivan faces a fight to stay inside snooker's top 16 and keep his automatic place at the World Championship after a 4-3 first-round defeat by world number 110 Ka Wai Cheung at the Northern Ireland Open.

The seven-time world champion lost to Cheung on Monday, 19 October in Belfast. The result was confirmed by the World Snooker Tour as a 4-3 opening-round defeat for O'Sullivan against the Hong Kong player World Snooker Tour.

O'Sullivan is ranked 13th in the world. The rankings are built on prize money earned at ranking events, the tournaments that decide the seedings, across a rolling two-year period.

He has banked £513,750 in that count, which leaves him £99,350 ahead of 16th-placed Ali Carter, according to the BBC BBC. Zhou Yuelong is 17th on £359,100, £154,650 behind O'Sullivan.

The cut-off matters because only the top 16 seeds go straight through to the final stages of the World Championship at the Crucible in Sheffield. Everyone else must come through qualifying, a series of play-off matches, with 16 winners advancing to the Crucible to be drawn at random against the 16 seeds.

O'Sullivan has said he would prefer to retire rather than enter World Championship qualifying, the BBC reports. He turned professional in 1992 and has set himself a deadline of 2028 to win an eighth world title and move clear of Stephen Hendry's record of seven.

His cushion has thinned because ranking titles have dried up. His last came at the World Grand Prix in January 2024. He earned £200,000 as runner-up at the Saudi Arabia Masters in August 2025, but played predominantly in Asia in 2025-26, entering only two tournaments in Britain, the UK Championship and the World Championship.

This season has brought little relief. His run to the semi-finals of the Wuhan Open was his only significant result in five tournaments to date in 2026-27.

What makes this stand out is the quiet arithmetic behind it. One loose frame in Belfast does not drop him out. It chips away at a lead built over two years. For fans, this means the spring will carry an extra edge: every early defeat leaves less room before the Crucible draw takes shape.