Amir Khan threw water over opponent Phil Lo Greco on Tuesday - reacting to talk about his personal life. <br /> <br />The pair meet in Liverpool on 21 April, when British welterweight Khan fights for the first time in nearly two years. <br /> <br />At a pre-fight promotional event, Lo Greco pointed to Khan's family issues and marital difficulties since losing to Saul 'Canelo' Alvarez in May 2016. <br /> <br />And the former world champion, 31, responded by throwing water at the Canadian, prompting an on-stage melee.