Fans spotted what Luke Littler did when Luke Humphries was on match point at the World Darts Championship final.
Littler's fairytale run came to an end on Wednesday as Humphries beat the 16-year-old sensation in the final.
The pre-tournament favourite who became world number one beat Littler 7-4 in a thrilling showdown to win his first world championship title.
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But before he wrapped up victory with his double eight, he had a chance to win the match as he was left with 125.
Humphries needed 25, treble 20 and double 20 to win the game. However, he started on bullseye and as he prepared to throw his dart, fans began to boo him on the oche.
Littler responded to the disrespectful gesture by telling the Ally Pally crowd to stop booing in a classy move.
The boos appeared to get to Humphries who accidentally hit two bullseyes, preventing a checkout with his final dart.
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Littler gave him another chance as he failed to checkout 28. On his second attempt, Humphries picked out double eight to win the match and the world title.
Littler's act of kindness shows he's mature beyond his years as darts fans online praised his gesture.
One X user wrote: "Luke littler trying to stop the crowd booing shows a level of class that matches his incredible talent (he'll win plenty)!! Humphries deserved to win at the end and is the best player in the world right now!"
A second tweeted: "16 year old Luke Littler told the crowd to stop booing when Humphries was on match dart at the World champs final."
After the match, Littler said: "The one negative was I lost too many legs on my throw, so Luke would break me, then hold and I'd be 2-0 down [in the set].
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"Fair play to Luke, he deserves it.
"I've got to the final, I might not get to another final for the next five to 10 years, we don't know, but I can say I'm a runner-up and now I just want to go and win it."
Topics: Darts, Luke Littler, Fan Reactions
Nasir Jabbar