Oleksandr Usyk warned 'I can be much better' after dethroning Anthony Joshua with an incredible performance on Saturday night.
The Ukrainian was giving up three inches in height and four in reach, as well as nearly 20lbs in weight, but the former undisputed world cruiserweight champion's technical acumen came to the fore in an electric atmosphere.
Usyk put on a masterclass in front of 65,000 fans inside Tottenham Hotspur Stadium, outclassing Joshua over 12 rounds, and hurting the defending champion on several occasions.
Oleksandr Usyk is the new unified heavyweight world champion after beating Anthony Joshua
Afterwards he said: 'The fight went exactly the way I expected it to go.