Nyorai kupfuurira kweiyi ndima - Apedza kuzivisa pashure pamaOlympics a1988 kuti aizoenda pamudyandigere kubva mukukanda pfumo, Sanderson akaita kudzoka kusingatarisirwi kumakwikwi muna 1989, paMcVitie's International Challenge, uko akapedza ari wechitatu. Akanga ariwo wechitatu pa 1989 European Cup pasinei nokuti akanga achiri asina kugwinya. PaMitambo yeCommonwealth ya1990, kukanda kwaiva kwakakwana kuti Sanderson achengete zita rake. Pa1990 European Athletics Championships Sanderson akapedza ari gumi nemaviri, asi akazosimudzirwa kusvika pagumi nerimwe mushure mekunge Felicia Ţilea abviswa. Ane makore 35, Sanderson akakunda muEuropean Cup ya1991
, pamberi penhandare yaibatanidza akabata rekodhi yenyika Felke.