Kammala jumla mai zuwa: Ralph Näf (an haife shi a ranar 10 ga Mayu 1980) ɗan tseren keke ne mai tsere na Switzerland. A Wasannin Olympics na bazara na 2004, ya yi gasa a tseren tseren maza, inda ya gama a matsayi na 6. A Wasannin Olympics na 2012, ya yi gasa a
Gasar tsere ta maza a Hadleigh Farm, ta kammala a matsayi na 18.