Povetkin would spark him out in brutal fashion by the 5th at the latest, and I'm being kind to Szpilka when I give him that long.
Only one in the thread who actually knows boxing. Povetkin has never been a very accurate puncher. Szpilka's movement will have Povetkin throwing a lot of punches at air. Szpilka wears the fat boy down, frustrates him and even lands with offensive combination going the distance with the open mouthed steroid cheat.
It goes 3 rounds at tops, with Szpilka visiting the canvas in each round getting waived off in the 3rd.