 Ramba uchinyora ndima iyi - Allen aiva nebasa rakaisvonaka ravaduku, achikunda Pan American Junior Championships muna 1989 na1991. Akakwanisawo kukwikwidza mumakwikwi matatu eWorld Junior Championship. Haana kumbosvika kumagumo emamita 400, kunyange muna 1986, 1988 kana kuti 1990. Mu 4 × 400 metres relay akapedza wechina muna 1986 na 1988 uye haana kusvika kumagumo muna 1990. Kubatanidzwa kwake mumitambo mitanhatu paWorld Junior Championships kwakanga kusingaenzaniswi kwemakore mazhinji. 