 Nyorai mberi kweiyi ndima - Pashure peSeoul, Stewart akatanga kutonga chiitiko chacho. PaPan Pacific Swimming Championships muna 1987, 1989, na1991, Stewart akahwina ndarama mumakwikwi emamita 200 achimhanya neshiri. Mumakwikwi eNyika a1991muPerth, Stewart akakunda ndarama mumakwikwi emamita 200 achimhanya neshiri, uye akaisa rekodhi yenyika nenguva ya1:55.69. 