Joe Cullen has launched a furious attack on Mensur Suljovic, branding the Austrian a "cheat" after crashing out of the World Darts Championship this afternoon.
The 36-year-old Englishman went down 3-1 to Suljovic in their second round clash at Alexandra Palace and wasted no time venting his frustration on social media.
Taking to X shortly after the match, Cullen didn't hold back.
"If that's darts, I don't want no part of it!" he wrote.
Joe Cullen was furious on stage after being beaten by Mensur Suljovic
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"Always liked Mensur away from the board but that was plain for all to see! I don't think I'm alone in feeling this way.
"The old guard will say it's part of the game but word it how you will - it's CHEATING! That's not darts."
The match itself was a tense affair that saw Cullen start brilliantly, taking the opening set in dominant fashion.
But things quickly unravelled as Suljovic's tactics appeared to get under his skin.
The 53-year-old Austrian took an age to collect his darts between throws and drew out his celebrations after winning legs.
It got to the point where referee Kirk Bevins stepped in, seemingly warning Suljovic that his post-leg celebrations were dragging on too long.
Mensur Suljovic was accused of cheating after taking too long with his darts as well as his celebrations
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Despite this, the man nicknamed 'The Gentle' kept up his leisurely approach throughout, eventually sealing victory on double 10 after Cullen missed two darts to stay alive in the contest.
It's clear Cullen's anger didn't end with his social media blast.
Despite the pair sharing a hug at the oche after Suljovic threw the winning dart, the Englishman was visibly seething.
As the Austrian wheeled away in celebration before returning to console his opponent, Cullen's body language told its own story.
When Suljovic then flexed his muscles in front of the Ally Pally crowd, 'The Rockstar' shot him a pointed glare.
The whole episode suggests that while Cullen may have respect for his rival away from the dartboard, their relationship on it has taken a serious hit this afternoon.
Suljovic, for his part, seemed unfazed by the controversy swirling around him.
Joe Cullen took to social media to accuse Mensur Suljovic of cheating
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Speaking to Sky Sports after his win, he said: "I played brilliant. Respect for Joe Cullen! I shake his hand. I like him."
Sky Sports pundit Dan Dawson offered his take on the dramatic encounter, suggesting the Austrian had got inside his opponent's head.
"Mensur has broken Joe Cullen's brain in that one. He couldn't stop Mensur at the end," Dawson said.
Heartbreak for the Rockstar as Mensur Suljovic triumphs to make it to round three 🎯 pic.twitter.com/ljcypfiPLn
— Sky Sports Darts (@SkySportsDarts) December 21, 2025
The victory means Suljovic marches into round three, where a potential showdown with world number one and reigning champion Luke Littler could await if the teenager gets past Welshman David Davies.