In April 1983, Dave Mustaine was fired from Metallica. Kirk Hammet left Exodus to replace him. Dave Mustaine got together with bassist David Ellefson, guitarist Kerry King and drummer Lee Rausch to form Megadeth.
Kerry King assisted Megadeth on tour and then returned to Slayer.
In 1984 Lee Rausch was replaced by Gar Samuelson on drums.
