Judd Trump panned his own performance as the world No 1's title defence at the UK Championship was halted at the first hurdle by qualifier Mark Joyce.
A year after landing the biggest title of his burgeoning career at York's Barbican Centre, Trump was on the painful end of one of the biggest upsets in the tournament's history, losing 6-5 to 50th-ranked Joyce after holding a 5-2 lead.
"I should never play that bad. You'll never see another world No 1 play as badly as that," said Trump.
Ali Carter was a scrappy winner against Steve Davis, coming through 6-2 against the man who won this tournament six times in the 1980s. Both struggled for fluency, Carter's highest break of 88 and an 85 from Davis in the seventh frame out of keeping with the flow of the match.
China's last hope Cao Yupeng became the third player from snooker's boom nation to make a first-round exit, tumbling out 6-1 against Mark Davis, while Shaun Murphy – UK champion in 2008 – began with a comfortable 6-3 win over Robert Milkins.