Pedzisa mutsara unotevera: Zviitiko zvake zvokutanga zvemakwikwi enhangemutange uye munda zvaiva somunhu wechiduku wechikoro chesekondari uye John Anderson, mutongi wehurukuro yeTV yeUK "Gladiators" uye mudzidzisi weaimbova muridzi wenyika Dave Moorcroft, akamukurudzira kuti afunge nezvemitambo. Achidzidzira paCorby Athletics Club, akatanga kukwikwidza mu decathlon uye 110 metres zvipingamupinyi uye akazova nhamba yekutanga pasi pemakore makumi maviri mutambi weBritain muzvikamu zviviri. Mumakwikwi eAmateur Athletic Association (AAA) pasi pemakore makumi maviri muna 2003, akakunda decathlon. Makwikwi ake ekutanga makuru evadiki aive 2003 European Athletics Junior Championships, kwaakapedza wechishanu mumakwikwi ekupedzisira e110 m zvipingamupinyi. Akakwikwidza pamusangano weAAA wa2004 uye akapedza wechitatu mumatambudziko, shure kwaRobert Newton naPaul Gray. Pa
2005 European Athletics U23 Championships, Sharman akanga ari kunze kwemenduru nechinzvimbo chechina. Kukuvara kwepafudzi gore iroro kwakanga kwakanganisa mano ake okurasa pfumo uye akaita chisarudzo chokurega decathlon kuti afungisise bedzi pakurwisa zvipingamupinyi.