"I first sparred with Povetkin when he was preparing to fight Joshua. You wouldn't say Alexander is a big puncher by his appearance, but he actually has a strong punch. I remember how I felt the first time I stepped in the ring with him. I came out light, let's just say I wasn't expecting what was coming my way. I was throwing and throwing, and then I got a left jab to the guard, to the glove - boom! I was like, "Interesting, interesting."
That was a really big shot. It was a surprise to me, because he actually hit a lot. After that, I started to be cautious, I started to pay more attention to defense, I did not allow myself to be hit so easily, I was constantly moving, throwing punches", said Vladislav Sirenko in an interview with the resource "Boxing truth".