Dee ihe ga-aga n'ihu na paragraf a - Ebe o kwusịrị na ya ga-ala ezumike nká n'ịtụ javelin mgbe asọmpi Olympic nke 1988 gasịrị, Sanderson mere nlọghachi a na-atụghị anya ya n'asọmpi n'afọ 1989, na McVitie's International Challenge, ebe o meriri nke atọ. Ọ bụ onye nke atọ na 1989 European Cup
n'agbanyeghi na ọ ka bụ onye na-adịghị ike. N'egwuregwu Commonwealth nke afọ 1990, ọ bụ naanị otu iko ka Sanderson ji chekwaa aha ya. Na 1990 European Athletics Championships Sanderson kwụsịrị nke iri na abụọ, mana emesịrị kwalite ya na nke iri na otu mgbe Felicia Ţilea kwụsịrị. Mgbe ọ dị afọ iri atọ na ise, Sanderson meriri n'asọmpi Iko Mba Yurop n'afọ 1991, n'ihu ndị na-agba ya bụ asọmpi gụnyere Felke, onye na-achị ụwa n'oge ahụ.