Ahead of the World Snooker Championship, Ronnie O'Sullivan reflects on two tussles that got away - a 2017 defeat to Ding Junhui, and a second-round exit to Barry Hawkins in 2016. The seven-time Crucible champion says he was "gutted" to lose both, while he also talks about the "hell" of his infamous clash with Peter Ebdon in 2005. Stream all the Sheffield action live on discovery+ from April 20.