Nyora kupfuurira kweiyi ndima - O'Neil akatanga mitambo yevakaremara paakanga ari mumusasa wemitambo muNew York City pazera ramakore gumi namaviri. Akatanga kumiririra Ireland pamutambo mukuru wepasi rose muBirmingham panguva ye1998 IPC Athletics World Championships, kuhwina goridhe muF51 vakadzi dhisiki kukanda. O'Neil akakwikwidza paMitambo yeParalympic yeZhizha katatu panguva yebasa rake, kutanga pa 2000 Summer Paralympics muSydney. Pakutanga nyanzvi mudhisiki, anoratidza akafambira mberi mune rake gare gare basa kupindawo kirabhu kukanda zviitiko. Kunyange zvazvo asina kukwikwidza muAtene, O'Neill aiva muchikwata cheIreland zvose zviri zviviri 2008 Mitambo muBeijing uye 2012 Mitambo muLondon
. Iye chete Paralympic podium yekupedzisa yakauya kuLondon, kwaakakunda sirivheri mu &lt;a href="Athletics%20at%20the%202012%20Summer%20Paralympics%20%E2%80%93%20Women%27s%20discus%20throw"&gt;discus throw - F51/52/53&lt;/a&gt;.