"Proksa, Grzegorz"@en . . . "Grzegorz Proksa (born 23 November 1984) is a Polish professional boxer. He is a two-time former European middleweight champion and a world title challenger."@en . "Grzegorz Proksa"@en . "1984-11-23Z"^^ . . "1984Z"^^ . . "Polish boxer" . "Super G"@en . "1.8"^^ .