FILE-This Dec. 3, 1982 file photo shows referee Arthur Mercante checking Thomas Hearns after he was knocked down in the 9th round of WBC World Super Welterweight Championship bout. Mercante, the third man in the ring for the first Ali-Frazier fight and more than a hundred other world title bouts, died at his home April 10, 2010. He was 90. (AP Photo)