Enzo Maccarinelli and David Haye came head to head in an all-British unification fight back in 2008. Haye, on the verge of a move up to heavyweight, was at the peak of his powers and a second-round knockout proved that. This is the latest episode of #WhatWentDown... Subscribe to BT Sport Boxing on YouTube ➡️ http://www.youtube.com/c/btsportboxing Follow BT Sport Boxing on Twitter ➡️ http://twitter.com/btsportboxing Join our BT Sport Boxing Facebook Group ➡️ https://www.facebook.com/groups/BTSportBoxing/ Follow us on Instagram ➡️ http://instagram.com/btsportboxing Read more on upcoming fights on BT Sport and BT Sport Box Office ➡️ http://www.bt.com/sportboxoffice