Dave Chisnall was left with egg on his face after celebrating a checkout – before finding out he had embarrassingly miscounted.
The world number six was dumped out of the PDC World Championship by Ricky Evans on Monday night in a five-set thrillier.
Chisnall, who averaged an impressive 94.54, lost 3-2 against ‘Rapid’ in what will go down as one of the most memorable second round contests at Alexandra Palace.
And in the fifth set, Chisnall was guilty of a gaffe that will go down in Ally Pally folklore.
Trailing 5-4 in the fifth, the 44-year-old needed to hold his throw to send the match into a sudden death leg.
He thought he had produced an incredible 139 checkout after taking out D16.
But in reality, he should have been taking out D20.
Chisnall reacted to the D16 by pointing his finger to the crowd, but was quickly left with his head in his hands after miscounting.
The fans in attendance all jeered in unison at Chisnall’s expense, who proceeded to speak with the referee about his error.
Speaking on talkSPORT 2, a shocked Paul Nicholson said: “He’s got it wrong! He’s got eight left!
“Apparently Professor Chisnall has miscalculated and now Evans can bring the guillotine down.”
Social media was sent into meltdown over the incident, as one X user said: “Moment of the tournament.”
Another commented: “Miscount and a missed big number. Absolute scenes.”
Meanwhile a third added: “Serious darting drama.”
Thankfully for Chisnall, Evans then proceeded to fluff his own attempt at a checkout after drifting into the 5s after hitting a first T20.
Chisnall then closes out the tenth leg of the fifth set to send the game to a sudden death.
But ultimately, Chisnall failed to progress into the third round after being blitzed in the deciding leg.
It means that he has become the latest top seed to bow out in what has been an enthralling tournament so far.