Anthony Joshua has warned his heavyweight rivals, Deontay Wilder and Tyson Fury, that he is only going to get better.
The current IBF, WBA and WBO champion is yet to face either fighter in his career, although attempts to organise a bout have been repeatedly frustrated by breakdowns in negotiations.
Wilder has stated that he will not take on Joshua until next year at the earliest and not in any of his next three fights, whilst Fury has implied he has no plans to challenge the 29-year-old in the near future.
“The longer Wilder and Fury leave it, the tougher it will be for them as I am not the fighter of two years ago,” he told BBC Sport. “Give me another year or two and I’ll develop that little bit more.”
Joshua also stated that he believes the pair should be wary of his improvement since defeating Wladimir Klitschko in April 2017.
“I’ve got through with strength, guts and heart. I’ve got away with mistakes. I realised I couldn’t continue my journey like that,” he said.
“After Klitschko, I thought ‘how many more fights can I have like that before the mistakes aren’t there anymore?’
“How do we now train smart to become smarter in the ring? Less quantity, more quality. It didn’t happen overnight. It has taken two years to implement it and this is the first camp we are really seeing it.
“Look at my last fight against Alexander Povetkin. I was ill, tired, had a flu, had a headache. I was going through changes. It will be interesting as this is the first time I can express these things.”
Joshua is currently concentrating on his upcoming US debut against Andy Ruiz Jr on June 1, a match for which he has said his strategy will feature a combination of “science and entertainment”.
He was originally meant to face Jarrell Miller in a bout organised following failed talks with Wilder and Fury’s camps.
Whilst many have speculated that his latest comments are an attempt to aggravate his two rivals to return to the negotiating table, at the moment it seems the chances of Joshua facing either are slim at best.