01:00World Championship Snooker Extra2010Day 4BBC Two Duration: 2 hours Wed 21st Apr 2010, 01:00 on BBC Two Northern IrelandHighlights from the day's first-round matches are introduced from Sheffield.ContributorsPresenter:Hazel IrvinePresenter:Rishi PersadParticipant:Ken DohertyParticipant:John ParrottCommentator:Neal FouldsCommentator:Terry GriffithsCommentator:Dennis TaylorCommentator:Willie ThorneCommentator:John VirgoGenresSportSnookerBrandWorld Championship Snooker ExtraSeriesWorld Championship Snooker Extra: 2010 Source: BBC Online