Gil Clancy and Angelo Dundee were both in Clay (Ali's) corner for the Sonny Banks fight...Muhummad Ali was knocked down in that fight...Clancy was asked if it was hard to revive Ali...Gil said it was harder to revive Angelo...
If you get the chance there's a great piece about that fight by A. J. Liebling called The Poet And The Pedagogue... In that piece Liebling makes the famous obsevation that:
"Honest effort and sterling character backed by solid instruction will carry a man a good way, but unearned natural ability has a lot to be said for it."