 Nyorai mberi kweiyi ndima - Allen akasvika pakupedzisira kwake kwekutanga mumakwikwi e2011 UK Championship. Kusvika parizvino akahwina makwikwi mashanu ekumisikidza 2012 World Open, 2013 World Open, 2016 Players Tour Championship Finals, 2018 International Championship, uye 2018 Scottish Open. Allen akahwina mukombe wake wekutanga weTriple Crown mumutambo weMasters wa2018. 