Rubuta ci gaba don wannan sakin layi - 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, ya kai matakin 16 na karshe 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.