Leo Atang TKO1 Jonathan Vergara... Briitsh heavyweight prospect Leo Atang, just nineteen years of age, appeared on the Dalton Smith vs. Alberto Puello undercard and scored three knockdowns in the first round against Argentina's Jonathan Vergara (9-5). The fight would be stopped by the referee at the end of the first round with Atang's record now reading 9-0, including eight of those wins coming by way of knockout.