Mezue ahịrịokwu na-esonụ: Na-etolite na Adelaide na ịbụ onye Glenn Beringen na-azụ na South Australian Sports Institute, Mitchell mere ya mbụ na
Egwuregwu Commonwealth 1994 na Victoria, British Columbia, Canada. Ọ bụ onye meriri ọla ọcha na 1995 na 200 mita breaststroke na asọmpi egwuregwu ụwa dị mkpirikpi na Rio de Janeiro. O meriri nhọrọ maka ndị otu mba maka 1996 Summer Olympics na Atlanta, mgbe ọ nwụsịrị na Phil Rogers iji merie 200 mita breaststroke na Australian Championship. N'ọnwa Disemba nke afọ ahụ, Mirchell mebiri ndekọ ụwa maka ụmụ nwoke 4 × 100 mita medley relay na Australian & Commonwealth Shortcourse ndekọ maka 200 mita breaststroke. Ọ na-eji nwayọọ agba mmiri n'egwuregwu Olimpik, wee nọrọ n'ọkwa nke iri na otu.