RONNIE O'SULLIVAN insists he will not crack in his pursuit of another place in the history books.
The 37-year-old is bidding to become the first player this century to retain the Betfair World Championship title and has raced to a 11-1 lead over Stuart Bingham in their best-of-25-frames quarter-final.
O'Sullivan knows he used to be categorised as a player who could mentally combust in matches, but his work over the past two years with sports psychiatrist Dr Steve Peters has transformed his outlook.
"That won't happen again, none of those meltdowns will happen, no matter how frustrated I may be with myself out there. I'm able to put that on hold until the game's finished," O'Sullivan said.
"Not once have you been able to see me lose the plot. Sometimes inside I feel it's tough and it's challenging, but I'm able to overcome that.
"In the last two years I've changed a lot."
Dr Fuentes gets off lightly as blood bags destroyed
CYCLING: The Spanish doctor at the heart of one of cycling's biggest doping scandals was found guilty of endangering public health and given a one-year suspended jail sentence in the Operation Puerto case.
Eufemiano Fuentes was also barred from medical practice in sports for four years and ordered to pay a fine of €4,650.
Judge Julia Santamaria read out the verdicts seven years after police raided Fuentes' Madrid clinics and seized more than 100 blood bags, which contained red blood cells and plasma separated by Fuentes from his patients. She ruled the bags to be destroyed, ruling out any possible investigations by the World Anti-Doping Agency.
McQuaid's UCI bid facing scrutiny at EGM in June
CYCLING: Pat McQuaid's nomination for president of the UCI will be discussed at an extraordinary general meeting in June, Cycling Ireland has announced.
The embattled president of cycling's world governing body will be the subject of the June 15 meeting in Dublin after his initial endorsement did not observe the full rules and regulations.
The decision will now go to a membership vote on whether his nomination to stand as a candidate for presidency should be submitted by Cycling Ireland.
Boxer Harrison retires
Audley Harrison has announced his retirement from professional boxing.
Harrison won an Olympic gold medal in the super-heavyweight division at the 2000 Games in Sydney but he has flattered to deceive in the paid ranks.
While he challenged for a world title, two first-round knockout defeats – the latest of which came against Deontay Wilder over the weekend – in recent months have convinced the 41-year-old to end his career.