Kasparov rose speedily from the FIDE entire world rankings. Due to an oversight from the USSR Chess Federation, which believed that a grandmaster Event in Banja Luka, Yugoslavia, was for juniors, he participated in that event in 1979 although still unrated. He was a substitute with the Soviet defector https://financefeeds.com/ftx-alameda-estate-challenges-jump-trading-subsidiarys-264-million-claim/