Galway held off a late Mayo fightback for a thrilling win away to their great rivals in the Connacht quarter-final at MacHale Park.
The Tribesmen raced out of the blocks away from home and built up a 1-4 to 0-2 lead after just 10 minutes but Mayo fought back to level midway through the first half.
The early goal came when Damien Comer picked out Johnny Heaney with a fisted pass across goal and the Killannin clubman side-footed the ball home.