23:20Snooker: World Championship Highlights2011Day 11BBC Two Duration: 50 minutes Tue 26th Apr 2011, 23:20 on BBC Two EnglandHazel Irvine presents highlights from the opening exchanges in the four quarter-finals.ContributorsPresenter:Hazel IrvineCommentator:Neal FouldsCommentator:Terry GriffithsCommentator:Dennis TaylorCommentator:Willie ThorneCommentator:John VirgoGenresSportSnookerBrandSnooker: World Championship HighlightsSeriesSnooker: World Championship Highlights: 2011 Source: BBC Online