# Ronnie O'Sullivan tournament performance decline

> Developing situation record from CLSTR: https://clstr.news/situations/ronnie-osullivan-tournament-performance-decline
> Updated: 2026-10-19T20:42:46.000Z. Sources: 5. Developments: 2.

Professional snooker player Ronnie O’Sullivan has experienced a series of early exits in recent ranking events. In late September, O’Sullivan was eliminated in his opening match at the Shenzhen Open, losing 5-2 to Jiang Jun.

This trend continued at the Northern Ireland Open in Belfast, where O’Sullivan lost 4-3 in the opening round to Cheung Ka Wai. Despite holding a 3-1 lead during that match, O’Sullivan was unable to prevent a comeback by the Hong Kong player. O’Sullivan has attributed this period of struggle to a personal “illness” regarding his technique, noting that his current method has left him without his “usual strength or sense of direction on the table.”

## Timeline

### 2026-10-19: Ronnie O’Sullivan defeated by Cheung Ka Wai at Northern Ireland Open

Ronnie O’Sullivan was eliminated in the first round of the Northern Ireland Open after a 4-3 defeat to world number 110 Cheung Ka Wai in Belfast.

2 sources. https://clstr.news/cluster/ronnie-osullivan-defeated-by-cheung-ka-wai-at-northern-ireland-open

### 2026-09-28: Shenzhen Open: Ronnie O'Sullivan eliminated in opening match

Ronnie O’Sullivan was eliminated in his opening match at the Shenzhen Open, losing 5-2 to world number 64 Jiang Jun.

3 sources. https://clstr.news/cluster/shenzhen-open-ronnie-osullivan-eliminated-in-opening-match

---
Cite as: Ronnie O'Sullivan tournament performance decline. CLSTR, https://clstr.news/situations/ronnie-osullivan-tournament-performance-decline