Marvelous Marvin Hagler was fighting in his first super-fight against a Roberto Duran who had previously had two fights with Sugar Ray Leonard.

From a ringside seat to Hagler vs Leonard to meeting icon Frank Sinatra, U2 have special memories of being in Las Vegas.

In an extract from his book, Brian Doogan takes a look at the late, great champion, Marvelous Marvin, who had a big impact on an all-time great from Ireland.

The boxing fraternity continues to mourn the loss of boxing legend Marvelous Marvin Hagler.