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The issue of athletes with male characteristics and transgender athletes competing in women’s sport is a charged one, with some opponents and activists demanding that women’s sports be solely reserved for those assigned female at birth. Mr. Adams has said both Khelif and Lin identify as females in their passports. Above: The Italian, Angela Carini (right), stopped fighting only 46 seconds into her matchup against Imane Khelif of Algeria, who had been barred from a women’s event last year.