Tommy Fury's fight with Jake Paul could go up in smoke ... after TNT claims he was denied entry into the United States ahead of their scheduled press conference in New York.
Just when it seemed like the bout was FINALLY going to happen, Tommy shared the crappy news on his Instagram on Tuesday ... saying his team showed up at Heathrow Airport to hop over the pond ... but they were shut down.
"As soon as I entered the airport, I was pulled to one side and told by a Homeland Security officer that my ESTA had been denied and that I wasn't able to travel to the USA for a reason I apparently know," Tommy said in a video.
Tommy, boxing superstar Tyson Fury's younger brother, went on to say he's done nothing wrong ... and claims he's totally dumbfounded as to why he's not allowed to travel to the U.S.
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"I've been training for a fight this whole time and that's all I've been doing," Tommy said. "I have no clue why I'm not allowed to travel and neither does my team or my lawyers."
"Now I've got to go to the embassy trying to resolve it and I'm in the middle of training. I don't know why this has happened a huge shock to me and my team."
As we reported, Tommy and Jake agreed to fight each other at the world's most famous arena -- Madison Square Garden -- in NYC on Aug. 6 ... but Tommy says the issues he's currently facing are bigger than the fight.
What's interesting -- Tommy was able to travel to California last month without issue ... something his nemesis pointed out.
Of course, this isn't going to sit well with fans who've been clamoring for the two boxers to fight after years of trash talk and failed negotiations.
The presser between Tommy and Jake was originally scheduled for Wednesday ... but it's been postponed, according to Most Valuable Promotions.
Despite many assurances by Tommy Fury and his team that he was able to come to the U.S., and knowing that Tommy was in California just last month, we were surprised to learn that he had an issue at Heathrow airport on Monday.
Despite the travel mishap, Jake isn't letting Tommy off the hook easily ... tweeting, "Tommy, no matter how hard u try to get out of this fight, I'm going 2 do everything in my power 2 not let u weasel ur way out."
Tommy, no matter how hard u try to get out of this fight, I’m going 2 do everything in my power 2 not let u weasel ur way out. My team & my partners have made it clear the steps u need to take 2 solve ur latest excuse. Take them or admit ur a scared little bitch. #TommyFumbles