Most 147 breaks (13):
1997 World Championship
1999 Welsh Open
1999 Grand Prix
2000 Scottish Open
2001 LG Cup
2003 World Championship
2007 Northern Ireland Trophy
2007 UK Championship
2008 World Championship
2010 World Open
2011 Paul Hunter Classic
2014 Welsh Open
2014 UK Championship
Fastest 147 break: 5m 20s. Actually, the top 5 fastest 147 breaks are made by Ronnie O'Sullivan.
World Championship winner: 2001, 2004, 2008, 2012, 2013. There are only two players in the world who have won more World Championships: Steve Davis (6) and Stephen Hendry (7).
Most competitive century breaks: 819.
He has won 54 titles in all (from 76 finals). His most important being the 2001 World Championship, the 2004 World Championship and the 2008 World Championship, the 2012 World Championship and the 2013 World Championship. The 1993 UK win made him the youngest ever winner of a ranking event, at 17 years 11 months.
He is one of only five players to win both the World Championship and the UK Championship in the same year. Steve Davis, Stephen Hendry, John Parrott and John Higgins are the others.
During the summer of 1992, Ronnie won 38 consecutive matches in qualifying competition.
By winning the 2010 Premier League Ronnie O'Sulivan became the first man to win a single professional title on nine separate occasions, surpassing Steve Davis' previous record of eight. He also won in 2011 to make it 10.