06:20Snooker: World Championship2021 HighlightsDay 4BBC Sport Duration: 49 minutes Wed 21st Apr 2021, 06:20 on Red Button OneHighlights from the first round, with matches featuring Mark Allen and Ding Junhui.GenresSportSnookerBrandSnooker: World ChampionshipSeriesSnooker: World Championship: 2021 Highlights Source: BBC Online