Former undisputed heavyweight champion Lennox Lewis was impressed by the recent performance from Daniel Dubois, who returned to the ring last Saturday in Riyadh, Saudi Arabia.

Dubois overcame some tough moments to break down and stop Jarrell Miller in the tenth and final round at the 'Day of Reckoning' event.

The 26-year-old took his fair share of punches, but he rallied in down the stretch to inflict the first defeat on Miller's record.

Dubois was coming back from an August knockout loss at the hands of unified heavyweight champion Oleksandr Usyk.

"Daniel Dubois really came alive in the late rounds, using his jab, using his movement and caught a lot of confidence," Lewis told TNT Sports. "He's boxing a 320-pound guy and he was giving up too much ground in the first rounds. Really what he should have done was slide him to the left - allow a 320-pound guy to move, keep giving him angles.

"As he gained his second breath he did very well, he looked like a good boxer. He was using his legs and doing a little jiving. He learnt a lot about himself, that he can actually be in there with the big guys. It's a big win, and now it's off to the next step - who is next? 

“I think he should target one of the big guys, because for each opponent you've got to train differently and you've got to throw in different combinations. He's got a little bit more confidence, so he should switch up the opponents and get one of the big guys or the smaller guys; it doesn't matter, because you have to prepare for each opponent.

“He learned he can be in there with the big guys. Miller was trying to test his heart. He was stepping into him hoping Daniel would punch himself out. He didn't punch himself out. He was too smart for him. In fact, Miller punched himself out."