23:20Darts: World Championships - Highlights2011Day 4BBC Two Duration: 50 minutes Tue 4th Jan 2011, 23:20 on BBC Two EnglandRob Walker introduces highlights of the second round matches.ContributorsPresenter:Rob WalkerCommentator:Tony GreenCommentator:David CroftCommentator:Vassos AlexanderGenresSportDartsBrandDarts: World Championships - HighlightsSeriesDarts: World Championships - Highlights: 2011 Source: BBC Online