O'Sullivan had made 773 century breaks at the start of 2015. On 13 January, in the first round of the 2015 Masters, he made two centuries to equal Stephen Hendry's record of 775. Two days later, in his second-round match, he broke Hendry's record, making his 776th century. He made his 800th century on 5 January 2016 in a Championship League group match against Barry Hawkins, and his 900th on 10 November 2017, in the semi-final of the Champion of Champions against Anthony Hamilton. His 1,000th century was recorded on 10 March 2019, in the final of the Players Championship against Neil Robertson. O'Sullivan made his 1,100th century on 22 March 2021, in his quarter-final match of the 2021 Tour Championship against John Higgins.