RT @BBCSnooker: We are under way at the Crucible again. Mark Williams is quickly into his groove against Ali Carter 💪 Just the 135 to start 😱 John Higgins and Judd Trump are in the other quarter-final, which Trump leads 1-0. Watch on BBC2, the Red Button & online: https://t.co/bJxPNHuy70 https://t.co/WLLCljwQ8b