Fans on Twitter are calling for Logan Paul to be drug tested after an image of the YouTuber was uploaded to Twitter.
The American is set to face fellow YouTube sensation KSI on Saturday in Las Vegas for their highly anticipated rematch.
The fight is set to take place at the Staples Centre and will be available on pay-per-view.
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But many fans are asking questions about Paul's physique after a tweet from promoter Eddie Hearn on Monday afternoon.
Some fans are calling for Paul to be drug tested as they believe his physique doesn't look entirely natural.
The 24-year-old has always had an impressive physique so it is likely just intense training leading into the match.
The rematch is eagerly anticipated and has been over a year in the making.
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The pair fought in an amateur fight back in August 2018 at the Manchester Arena.
The fight ended in a majority draw scoring 57-57 which caused major controversy and call for another fight.
Since then, the rematch has now turned into a huge sporting event with names such as Eddie Hearn's Matchroom Boxing getting involved in promotion.
The under card is also set to feature current WBO Super Middleweight champion Billy Joe Saunders defending his title against Marcelo Esteban Coceres.
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KSI discussed the fight last week and said he is a 'different animal' to the one that fought last August.
"This camp is tough man," the 26-year-old told the Mayweather Channel.
"But I know it's going to turn me into a beast to the point where Logan is just going to look into my eyes and say 'I don't want any of this'.
"I think he'll give up, maybe even round one or two after he realises that I'm a different animal to last year.
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"I'm training so hard, everything is so solid, my team solid, food is good, it's even better now."
Who do you think will win, KSI or Logan Paul?
Sound off in the comments below.
Featured Image Credit:Topics: Logan Paul, Boxing News, Boxing, KSI, Eddie Hearn