Grab a handful of fighters from any weight class and you’ll quickly notice that none of them think similarly.

From the way they train to the way they fight. One thing, however, remains the same — quitting is unacceptable.

Unfortunately for Daniel Dubois, that has been his reputation.

That narrative began late in 2020 against Joe Joyce. Although Dubois was winning, Joyce slowly broke him down.

By the time the 10th round arrived, Dubois’ left eye was swollen shut due to a broken orbital bone. After being forced to kneel, he was counted out.

Whispers of Dubois being a quitter began circulating. Those doubts were seemingly solidified against Oleksandr Usyk in 2023, when he was stopped in the ninth round.

Despite not exactly going out on his shield versus Usyk, Dubois rebuilt himself by grabbing three consecutive knockout wins against Jarrell Miller, Filip Hrgovic and Anthony Joshua. Beating Joshua earned him some hardware — the IBF heavyweight title Usyk gave up after his first fight with Tyson Fury in May 2024.

Those wins ultimately were enough to put him back in the mix and earned him another shot at Usyk (23-0, 15 KOs). But Dubois (22-3, 21 KOs) was flat out dominated by the undisputed champion, who knocked him out in the fifth round of their rematch Saturday night at Wembley Stadium in London.

Derek Chisora watched Dubois lose again from a ringside seat. The longtime heavyweight contender noticed Dubois’ body language, his confusing game plan and everything in between.

Chisora couldn’t help but place that same burdensome sticker back on the former beltholder.

“He quit, he quit again,” Chisora told Seconds Out. “He quit.”

Chisora is treated like U.K. royalty. He has won the fans over with his never-say-die attitude and — win, lose or draw — wants everyone to fight the same way.

Chisora was very disappointed by Dubois’ performance after what he witnessed when he ripped through Joshua on Sept. 21 at Wembley Stadium. He was expecting Dubois to replicate how he performed in knocking out the former unified champ in the fifth round.

“It was set for him to win it,” Chisora said. “He quit when he walked in the ring. He didn’t hunt the way he was hunting AJ. It was his to win.”