Whakaotihia te rerenga e whai ake nei: Ko te mētara tuatahi a Walker i puta mai i te parahi i roto i te 100 m breaststroke i te 1997 European Championships i Spain. Mai i taua wa kua wikitoria ia e wha nga mētara o te European Championship me nga mētara e waru o te World Championship. I riro hoki i a ia he mētara parahi i te 50 m freestyle, ā, ko ia te tuawha i te 100 m freestyle, i te
Ko nga Taakaro Commonwealth 2006 i Melbourne, ko ia anake te kaikawe hauhautanga e tohu ana i a Ingarangi.