Anthony Joshua took aim at Kubrat Pulev after the Bulgarian pulled out of next weekend's world heavyweight title fight in Cardiff.
WBA, IBO and IBF champion Joshua will take on Frenchman Carlos Takam (35-3-1) at the Principality Stadium after Pulev withdrew due to a pectoral injury.
The reduced prestige involved in taking on journeyman Takam in his first fight since an epochal 11th-round knockout of Wladimir Klitschko has clearly irked Joshua, who was said to be "p****d off" about Pulev's withdrawal.
And the champion outlined the numerous times he has fought through the pain barrier to emphasis his point.
"I had glandular fever against Dominic Breazeale in June 2016, my shoulder in this camp," said Joshua.
"Fighters go through a lot. Two weeks before the Klitschko fight I went for a Thai massage and she stretched me. She pulled my arm down my leg and it cramped my back.
"I swear, I was walking doubled over. Two weeks before. But we crack on. I fought Michael Sprott with a fractured back, just crack on.
"You build up so much to this one moment and because of a niggle you're going to let it go. I don't think, touch wood, unless it was serious, serious, I don't think I'd stop."
Joshua had sought a rematch with Dillian Whyte, who he beat in seven thrilling rounds in December 2015, or Klitschko, but Takam is a mandatory opponent.
"I wanted him [Whyte] to replace Pulev in Cardiff,' says Joshua. "But Eddie [Hearn, promoter] told me I had to go down one place in the IBF rankings to Takam to fulfil my mandatory defence. Otherwise I may have texted Vitali Klitschko to ask his brother if he could be ready in 12 days to fight me again.
"I thought Wladimir might still have been obsessed enough about me to come back for a second fight. I was disappointed when he retired.
"Either would have done. I reckon there should be four or five memorable fights in my career. Against Dillian and Wlad we've had two. Loved it. Why not do it again?"
|U.S. Open champion Koepka happy to continue being ´overlooked´|
|Pogba: I´m the most criticised player in the world|
|Maradona: Sampaoli´s game plan against Iceland was a disgrace|
|De Gea will bounce back from error – Marchena|
|Slater named for Maroons return|
|Woods, Faldo, Harrington and Koepka – U.S. Open champion joins fine club after successful defence|
|Fleetwood positive despite falling short at U.S. Open|
|Jesus: I had no reason to play for a penalty|
|Hernandez admits to exaggerating fouls against Australia|
|Koepka says winning two U.S. Opens not even in his ´wildest dreams´|
|Hernandez: Griezmann an idol at Atletico|
|Sri Lanka take charge despite Gabriel exploits|
|U.S. Open final-round timeline: How clinical Koepka kept his crown|
|Koepka fights off challengers to successfully defend U.S. Open title|
|´Aching´ Neymar urges referees to intervene|
|BREAKING NEWS: Koepka holds on to defend U.S. Open title|
|Lozano goal causes artificial earthquake in Mexico|
|Djokovic: Mental battle will be Murray´s biggest|
|Hummels criticises Germany tactics in Mexico loss|
|Brazil the latest favourites to stumble, but Tite and Neymar won´t panic|
|Magnificent Fleetwood matches U.S. Open record with closing 63|
|Brazil 1 Switzerland 1: Zuber pegs back below-par Selecao|
|Warrington hold off Wakefield fightback, Tigers held despite Hitchcox heroics|
|Germany follow trend of poor starts for World Cup champions|
|Reed on the charge as U.S. Open race hots up|
|Milinkovic-Savic can play for any team in Europe, says Crespo|
|Southgate keen to unleash his bold new England|
|Konta fumes as Barty takes Nottingham title|
|Kante hails Pogba´s match-winning contribution|
|Germany struggle with generation gap|
|Neymar to make first competitive start since February in Brazil´s World Cup opener|
|Kane gunning for Ronaldo hat-trick heroics in England opener|
|Balotelli would fit in at Marseille - Raiola|
|Captain Ki happy to get tough on South Korea|
|Senegal call up Mbengue with Ciss ruled out|
|Mickelson celebrates at scene of Saturday meltdown|
|Germany 0 Mexico 1: Lozano stuns woeful reigning champions|
|Chandimal to face hearing after pleading not guilty to ball tampering|
|Griezmann ´must do more´, says Deschamps|
|Gasquet shows his class on grass to end Chardy´s chances|
|Courtois: Belgium outsiders not World Cup favourites|
|You can´t compare Ronaldo and Messi – Adrien Silva|
|Kiwis name seven uncapped players for England Test|
|Lorenzo tells critics: Remember MotoGP wins next time I struggle|
|Maaloul singles out ´future of English football´ Alli as main threat|
|Poland v Senegal: Nawalka waits on Glik|
|All Blacks draft in Riccitelli and Hemopo, Barrett not risked for third Test|
|Palermo to appeal play-off result after ´illegal game´|
|Once a year is not enough! - Alonso loved Le Mans bow|
|Colombia v Japan: Kawashima eager to right the wrongs of 2014|
|Russia v Egypt: Salah poised to derail hosts´ juggernaut|
|South Korea swapping kit numbers to confuse Sweden|
|Neuer, Ozil start for Germany in World Cup opener|
|Costa Rica and Serbia serve up plenty of the spectacular in sunny Samara|
|Alonso edges closer to ´Triple Crown´ with Le Mans glory|
|Costa Rica 0 Serbia 1: Kolarov stunner seals points|
|Belgium are better than Argentina – Gomez and Panama ignoring Iceland result|
|Messi, Ronaldo or Neymar would keep the goal - Evra defends Pogba|
|Two in a row for dominant Lorenzo in Barcelona|
|Maradona denies racism claim|
|Resilient Krunic breaks Tour duck|
|Federer wins Stuttgart Open on his return|
|Injured Vunipola to miss England´s series finale in South Africa|
|Ibrahimovic not involved in Sweden´s World Cup plans, insists Andersson|
|Sri Lanka captain Chandimal charged with ball tampering|
|Portugal will not underestimate Morocco, vows Adrien Silva|
|Messi is not Maradona, he does not win a World Cup alone - Crespo|
|Hourcade resigns after Pumas´ series defeat|
|Second place is worthless - Rivaldo admits pressure is on Neymar and Brazil|
|South Africa character made up for mistakes - Erasmus|