Former world champion Ricky Hatton announced his second retirement from boxing after his comeback bout against Ukraine\'s Vyacheslav Senchenko ended in defeat on Saturday. After a three-and-a-half year retirement from the sport, in which the 34-year-old Englishman battled alcohol and drug problems, as well as depression, Hatton was outclassed by Senchenko, who took victory on a ninth-round stoppage.