By Jacob Leeks Ronnie O’Sullivan clashed with referee Desislava Bozhilova during his World Snooker Championship defeat to Stuart Bingham. The Rocket had reached the quarter-finals of the tournament, coming up against Bingham in a match that has had a number of controversial moments. Heading into the 12th frame, O’Sullivan potted the black for 29, with his opponent on 43. But he was not in a position to then pot the next red into the corner due to the black obstructing his shot once it was put onto the table. Referee Bozhilova returned the black but it kept on rolling slightly closer to the cue…