Lengkepan kalimah di handap ieu: Allen ngahontal final ranking acara kahijina di 2011 UK Championship. Nepi ka kiwari manéhna geus meunang lima turnamén ranking <unk> 2012 World Open, 2013 World Open, 2016 Players Tour Championship Finals, 2018 International Championship, jeung
2018 Skotlandia Terbuka. Allen meunangkeun gelar Triple Crown kahijina dina turnamén Masters 2018.