Floored twice in round four, the nearly 41-year-old Alexander Povetkin connected with a counter left uppercut that instantly turned out Dillian Whyte's lights and transformed the heavyweight championship landscape.

Povetkin's punch won him the WBC "interim" heavyweight title belt, and ended Whyte's 1,000-plus-day tenure atop the WBC rankings and will likely produce a rematch.

The work rates were similar (Povetkin averaged 42 punches per round to Whyte's 40.1), but Whyte's accuracy gaps of 38%-19% overall, 31%-16% jabs and 53%-22% created connect leads of 63-34 overall, 33-12 jabs and 30-22 power that were rendered positively moot by Povetkin's thunderous blow. Whyte's jab (25.9 attempts/7.9 connects per round) was superb, but Povetkin's out-of-nowhere power was even more so.