13:00Snooker: The Masters2017Quarter-Final: Ronnie O'Sullivan v Neil RobertsonBBC Two Duration: 4 hours Thu 19th Jan 2017, 13:00 on BBC Two Northern IrelandQuarter-final action gets underway this afternoon at Alexandra Palace. Live coverage is introduced by Hazel Irvine.GenresSportSnookerBrandSnooker: The MastersSeriesSnooker: The Masters: 2017 Source: BBC Online