Kammala jumla mai zuwa: Bayan da ya fara zama kwararre a 1991, Dunn ya kasance cikin manyan 'yan wasa 64 a duniya tun daga 2002, ya kai matsayin sa mafi girma, a 32nd, a watan Oktoba 2010. Ya ji daɗin mafi kyawun aikinsa tun daga 2013, yana kaiwa matakin karshe na 16 na gasa uku, da kuma wasan kusa da na karshe na
2014 China Open da kuma 2015 Ruhr Open. Ya sanar da yin ritaya daga wasan bayan ya yi rashin nasara a zagaye na uku na gasar cin kofin duniya ta 2020.