Mark Williams beaten by Si Jiahui and unsure if he will be back at Crucible

LAST TIME AT CRUCIBLE? Mark Williams, left, was knocked out by Si Jiahui in the first round. Pic: Martin Rickett/PA

Three-time champion Mark Williams admitted he does not know whether he has played his last World Snooker Championship match after he suffered a dramatic 10-9 defeat to Si Jiahui in the first round.

Si continued his love affair with the Crucible as he followed up last year’s surprise run to the semi-finals by knocking out Williams in an epic clash.