Anthony Joshua has asked Deontay Wilder to take on better opponents in the heavyweight class.
Wilder will defend his title for the fifth time on Sunday against Gerald Washington, after his previous opponent, Andrzej Wawrzyk failed a drug test to force the change of opponents.
However, Joshua has questioned the progress of the unbeaten American and believes he needs to prove he is a champion.
“I think Wilder needs to fight better opposition,” Joshua exclusively told Sky Sports. “Washington is good, but he’s up and coming still. It was a last minute call-up as well.
“I know his last opponent failed a drugs test unfortunately, but I would love for him to postpone it for another month and get someone who could train for a world championship fight.”
“Wilder has been a professional for around eight to nine years and I want to see a bit more, and there is nothing wrong with that,” said Joshua.
“I’m speaking from a fan’s perspective, because I get it. After three years as a professional, they want more, so after nine years as a fan I’m saying: ‘Wilder we want more from you’, and there is nothing wrong with that.
“Good luck against Washington, but I think the other contenders in the heavyweight division need challenging as well, so I think it would be good for Wilder to force these type of fights, rather than taking easy pickings.”