Kasparov rose immediately with the FIDE entire world rankings. Because of an oversight by the USSR Chess Federation, which thought that a grandmaster tournament in Banja Luka, Yugoslavia, was for juniors, he participated in that event in 1979 when still unrated. He was a substitution for the Soviet defector https://financefeeds.com/neo-becomes-fx-partner-of-wolverhampton-wanderers-fc/