O’Sullivan opens up lead over Si in World Snooker Championship quarter ○ found 2025 › Apr › 30 (Wed) @ 07:10 UTC a story from The Guardian ⚠️ › International Sullivan ■■■ John Higgins ■■■ Mark Williams ■■■ Zhao Xintong ■■ Chris Wakelin Hard ■■ Ronnie O ■■ Crucible ■■ Si Jiahui ■■ Sheffield ■■ preview sentiment