He did it once before. He can probably do it again. He should fight Wlad in a retirement match, that's a fight everyone would wanna see.
Wilder would put Vitali to sleep. Vitali has only beaten slow, fat cab drivers. The only two live bodies he fought both beat him.
If Vitali came out of retirement, I wouldnt be shocked if he beat Wilder, even at his advanced age, but I dont think he will want to come back now. He had injuries and I think will be content with his career in being a 3 time HW world champ. Still good luck to Wilder
I would love it if he did come back, I still think he has enough to beat Wilder but it clearly is not going to happen.