Mark Allen rattled off four frames to ease into the second round of the World Championship with a 10-3 victory over Mitchell Mann.

The Northern Ireland left-hander had a 6-3 overnight lead and made short work of reaching the last 16 when play resumed in Sheffield yesterday morning.

Birmingham qualifier Mann, the only rookie at this year’s tournament, never settled as the 24-year-old’s nerves took a hold.

Allen won the first frame of the session despite a break of 47 ending when he screwed the cue ball back into the middle pocket.

The 2009 semi-finalist won another scrappy frame before a break of 67 took him to within one frame of victory.

Allen was on a potential 147 clearance after potting seven reds and six blacks in the 13th frame but ran out of position and had to take a pink.

But another 67 break had Mann in trouble, and Allen finished the game off when he was handed another visit at the table.

Allen told BBC Two: “Mitchell put me under pressure early on in the match and in the first four frames I could have been 3-1 down.

“But I played well after the interval and he sort of went a bit.”

Allen won his first title on British soil last month, triumphing at the Players Championship in Manchester.

On Tuesday night, Michael Holt produced the biggest win of his career to overcome Neil Robertson 10-6 as another former champion fell at the first hurdle.

The Crucible had already seen four former champions bow out in the first round, with Graeme Dott, Stuart Bingham, Peter Ebdon and Shaun Murphy all leaving Sheffield early, and – trailing 6-3 from the afternoon session – it was always a real possibility that Robertson might follow them.

And he did.

Qualifier Holt had not won a match at the Crucible since 2005 but showed no nerves at the resumption on Tuesday evening, extending his lead to 9-4 to move to within a frame of victory.

The 2010 champion looked like getting himself back into the match with breaks of 79 and 54, but a knock of 65 saw Holt get the job done and send the world number four out of the tournament.

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