Over the course of his career, he won at least one game from such world class players as David Bronstein, Max Euwe, Reuben Fine, Salo Flohr, Rudolf Spielmann, and Miguel Najdorf.
He had notable victories over renowned players like David Bronstein, Max Euwe, Reuben Fine, Salo Flohr, Rudolf Spielmann, and Miguel Najdorf during his career.