Ronnie O’Sullivan made light work of Ken Doherty this afternoon, sweeping to a 4-1 triumph at the Senior World Snooker Championship.It was a historic occasion at the Crucible, marking the very first time these two legends of the baize had faced each other at Sheffield’s iconic venue.The Rocket, seeded fourth in the tournament, was simply too strong for his 56-year-old Irish opponent throughout the last-16 encounter.O’Sullivan now turns his attention to tonight’s quarter-final clash with Peter Lines in the evening session.Ronnie O’Sullivan was too strong for Ken Doherty | PAThe victory comes just over a week after his disappointing second-round exit from the main World Championship, where John Higgins ended his title hopes on 27 April.O’Sullivan got off to a flying start, compiling breaks of 42 and 56 to pocket the opening frame with ease.The second frame proved tighter, with both players trading careful safety shots before the seven-time world champion edged ahead to make it 2-0.By the third frame, it looked like a whitewash was on the cards as O’Sullivan dominated proceedings.But ‘The Darlin’ of Dublin’ wasn’t about to leave empty-handed, fighting back to claim the fourth frame in front of a packed house at the Crucible.Ronnie O’Sullivan was critical of his own performance | GETTYO’Sullivan wrapped things up in style with a superb 93 break in the final frame, narrowly missing out on a century to seal his place in the last eight.Speaking after his victory, O’Sullivan was typically honest about his performance.”Yeah, it was all right. I feel comfortable at the table, but snooker’s not great, making some silly mistakes but I’ll take feeling good and where I am at the moment to where I have been,” he said.It’s clear the Rocket is in a reflective mood following his World Championship disappointment against Higgins less than a fortnight ago.That second-round defeat on 27 April brought his main tour campaign to an abrupt end, but he’s wasted no time getting back to business at the senior event.Tonight’s quarter-final against Lines offers another chance to build momentum at the Crucible.