Mezue ahịrịokwu na-esonụ: Umphrey gbara asọmpi n'egwuregwu mmega ahụ na mahadum na UCLA, ebe ọ bụ onye America niile na onye isi ndị otu ugboro abụọ. Ọ bụ onye otu mba United States site na 1989 ruo 1997, na-asọ mpi na World Artistic Gymnastics Championships na 1991,
1994, na 1996. Nsonaazụ ya kachasị mma bụ ebe nke anọ na ogwe osisi dị larịị na 1994. O nwetakwara ihe nrite ọla edo maka ndị otu niile na 1995 Pan American Games.