Alexander Krassyuk, promoter for WBO, IBF, IBO, WBA heavyweight champion Oleksandr Usyk, does not see any controversy in the knockout victory over Daniel Dubois.

On Saturday night in Poland, Dubois landed a big shot to the body which sent Usyk down in pain for several minutes. The referee, Luis Pabon, ruled it as a low blow.

Several replays of the connecting punch would create a lot of debate among fans, and fighters, with a lot of observers calling it a legal blow or borderline. There were also many who felt the punch was a low blow and the referee's ruling was correct.

Usyk would recover from the shot by the end of the round. He continued to box and dropped Dubois with a solid combination of punches at the end of the eight. At the start of the ninth, Usyk went right back to work and finished Dubois off with a right hand. He immediately went down and remained there for more or less the full count as the referee waved it off once Dubois got to his feet.

The only thing Krassyuk saw was a solid performance by his fighter.

"What do you mean a lot of controversy? For what? For the low blow? [Shows a picture of the punch on his phone] Do we see it? Do we need to talk about it anymore? Do we see the fist, the glove and belt? Do you like my photoshop [laughs in joking manner]? It's a real one [the photo]. We are not arguing [with Team Dubois], why should we argue about legal or illegal," Krassyuk told Seconds Out.

"It was an absolutely dominating performance. He won exactly every single round... including the one that's under discussion for so long. He won, he purely won. And then he knocked the guy the f--- out. What else can we add to this?" 

Krassyuk believes his fighter was hit with more than one low blow in the contest.

"We saw several low blows. There were several," Krassyuk said.