Leicester 's Sibson was stopped in six rounds by ' Marvellous ' Marvin with the WBC and WBA world belts on the line in February 1983 and the two have never met from that day to this .
Leicester 's Sibson held the European title at the time .
Leicester 's Sibson , who held the European title at the time , was stopped in six rounds by ' Marvellous ' Marvin with the WBC and WBA world belts on the line in February 1983 and the two have never met from that day to this .