 Wagstaff akaoneka pachikuva chokushambira chenyika yose apo akawana nzvimbo yechitatu mumitambo yose iri miviri yemamita 100 nemamita 200 mukumhanya kumusana pa 1991 World Aquatics ChampionshipsmuPerth, kuAustralia. PaMitambo yeOlympic yeZhizha ya1992 muBarcelona, Spain, Wagstaff akawana menduru yegoridhe nokushambira nokuda kwechikwata cheU.S. chakanga chakunda mumakwikwi okutanga e4×100-metre medley relay. 