16 Red Ball Clearances
In competition
The highest snooker break is Wally West's 151. He made the break in the final of a club handicap at the Hounslow Lucania Club in 1976 against Derek "Butch" Rogers, in front of about 100 spectators. The qualified referee John Posner was in charge of the match.
Wally won the first frame with the aid of a 104. In the second, Butch clipped the blue and left Wally snookered. Wally potted green as his free ball with a brown to follow. He then took 14 red and blacks and a pink off the last red. He then cleared up to make the 151.
Jamie Burnett (Scotland) made a break of 148 on 16 October 2004, at the Preston qualifiers for the Travis Perkins UK Championship. This was the first break over 147 in professional snooker. Burnett made the break in the 14th frame of his match against Leo Fernandez. He potted the brown as the extra red, then another brown followed by the 15 reds and all the colours. He made a blue on the first red, a pink on the last one and another pink on one of the other reds. The rest went with blacks. He went on to win the match 9-8.
The first 16 red clearance in a tournament was by Steve James (b. 2 May 1961) who made 135 against Alex Higgins in the World Professional Championships at Sheffield, S Yorks on 14 Apr 1990.
Others
On 23 April 2003 Jamie Cope made a 151 break on the match table at The Reardon Snooker Club (Hanley Stoke-on-Trent) during a practise game with David Fomm-Ward. After a foul shot by his opponent Jamie was snookered behind the Brown ball. He took the Brown as the free ball and then potted Blue, 8 Red and 8 Black, 2 Red and 2 Pink, 5 Red and 5 Black. Then cleared all the colours. Jamie is a professional snooker player from Stoke-on-Trent Staffordshire, England, and was 17 years old at the time.
In 1995 Tony Drago's (Malta) (b. 22 Sep 1965) made a 149 in a practice match against Nick Manning at the West Norwood Snooker Club.
Drago broke off and snookered Manning behind the brown. Manning tried to escape from the snooker but left a free ball. Drago took the brown as the free ball and then the brown again for four more points and followed that with 15 reds, 13 blacks, a pink and a blue and all the colours.
Eddie Manning (Leicester, England) also achieved a 149, in 1997 at Willie Thorne's in Leicester. His practice partner was Kam (or Kan?) Pandya. Manning. Like Drago he took brown, brown, 13 blacks, pink and blue.
Steve Duggan (b. 10 Apr 1958) made a witnessed break of 148 in a practice frame with Mark Rowing in Doncaster, S Yorks on 27 Apr 1988 (or 1992?).
Stephen Hendry made a 148 in practice vs Alfie Burden in 1993.
In 1976 Alex Higgins knocked in a 146 vs Willie Thorne in a Challenge Match. He had brown, green, 10 blacks and 5 pinks.
Cliff Thorburn managed a 139 in practice against Geoff Foulds in 1980.
Source:
http://www.snooker.org/plr/newrecords.shtml