WATCH: Huge shock at the PDC world championships as No.2 seed crashes out
Jamie Lewis produced a stunning display to knock second seed Peter Wright out of the William Hill World Championship.
Lewis won a high quality contest 4-1 at the Alexandra Palace to book his place in the third round.
Wright won the opening set against the darts but his Welsh opponent took the second with three 12-dart legs, an average of almost 120 and two bullseye finishes.
Lewis edged the third set and shortly after producing his 12th of 13 maximums, in a game where Wright himself managed eight, nailed a checkout of 121 to move to within one set of victory.
Wright gave himself hope by breaking his opponent in the third leg of the fourth set - but he wasted four darts to square the match and Lewis won the next leg to wrap up victory.
The 26-year-old will face James Richardson for a place in the quarter-finals, after Richardson defeated fellow Englishman Alan Norris 4-1.
There were also 4-1 second round victories for England's Darren Webster and Spain's Toni Alcinas against Australia's Simon Whitlock and Germany's Kevin Munch respectively.
Meanwhile, there were also wins for title holder Michael van Gerwen and former champion Raymond van Barneveld, on a day of high quality action at Alexandra Palace.