Mezue ahịrịokwu na-esonụ: Gallagher bụ onye asọmpi egwuregwu, na-asọmpi n'ịgba ogologo, diski, igba egbe, javelin na ịgba ọsọ, Ọ malitere itinye aka na egwuregwu mgbe ọ matara banyere Paralympics. N'oge nyocha ahụ, ndị na-ekewapụta ihe mere ka ọ nwalee ịgbapụ agbapụ, n'agbanyeghị na ọ na-eyi uwe egwuregwu nkịtị, o jisiri ike gbaa ọsọ nke ruru eru nke Paralympic. Mgbe otu afọ nke ọzụzụ gasịrị, ọ mụbara ebe a na-amalite site n'inwe ihe kachasị mma nke mmadụ. O nwere ọtụtụ ihe ndekọ na F13 nhazi ọkwa, gụnyere Australian na Oceanian ndekọ na ogologo jump, javelin na igba egbe, na ihe ndekọ Australia na diski. N'egwuregwu, ndị nkuzi ya gụnyere Mike Edwards na John Boas. N'ọnwa Jenụwarị afọ 2011, ọ gbara asọmpi na
2011 Christchurch IPC Athletics World Championships, ebe o mechara nke abụọ na ogologo jump na nke atọ na javelin throw, na a igba nke. Ọdịdị ya na asọmpi ahụ gosipụtara nlọghachi ya na egwuregwu ahụ mgbe ọ kwụsịrị iji sọọ mpi na ski.