English Open: Mark Williams becomes oldest player to make 147 break
Three-time world champion Mark Williams has become the oldest player to make a competitive 147 break.
Welshman, 47, achieved the total clearance in a 5-3 quarter-final defeat by defending champion Neil Robertson at the English Open.
Williams collected just 17 points as he lost the first three frames in Brentwood.
But he went on to celebrate the third maximum break of his career, even though he lost the match.
Williams' 147 is the seventh maximum break of the season so far and 183rd officially recorded in snooker history.
He made his first competitive 147 break against Robert Milkins at the 2005 World Championship and his second at a minor event in 2010.
Williams will bank the £5,000 prize for the tournament's highest break unless the maximum is equalled.
Robertson had three centuries - 127, 102 and 100 - in a high-quality match, with further breaks of 97 and 63 to progress as he chases the £80,000 first prize.
Australian Robertson will face a Saturday semi-final against Mark Selby, who beat fellow Englishman Ali Carter 5-3 in his last-eight tie.
Four-time world champion Selby was level at 2-2 at the interval, before Carter edged ahead with a break of 77. 
He then missed a green in the next frame to allow Selby to come back and make his first century of the match with 127. Selby went on to win the quarter-final with breaks of 68 and 73.
In the other quarter-finals, Northern Ireland's Mark Allen thumped Englishman Ashley Hugill 5-0 to continue his impressive season. 
Northern Ireland Open and UK Championship winner made breaks of 109 and 77 on his way to victory. 
Allen will next face Luca Brecel, who defeated former world number one Judd Trump 5-1. 
Brecel was already 4-0 up by the interval and although Trump pulled a frame back with a break of 128, the Belgian was able to force a mistake in the final frame and seal the win.