Rubuta ci gaba ga wannan sakin layi - Umphrey ya yi gasa a wasan motsa jiki na kwaleji a UCLA, inda ya kasance dan Amurka ne kuma sau biyu kyaftin din kungiyar. Ya kasance memba na tawagar 'yan wasan Amurka daga 1989 zuwa 1997, yana fafatawa a Gasar Gymnastics ta Duniya a 1991, 1994
, da kuma 1996. Sakamakonsa mafi kyau shi ne na 4 a kan sandar kwance a 1994. Ya kuma lashe lambar zinare ga ƙungiyar gaba ɗaya a Wasannin Pan American na 1995.