Rubuta ci gaba don wannan sakin layi - Willis ya gama na 4 a Gasar Cin Kofin Duniya ta 2013 da kuma Gasar Cin Kofin Turai ta 2013 (SC) (dukansu a cikin tseren mita 200). Ya gama na 4 a Gasar Zakarun Turai ta 2014 kuma ya ci gaba da lashe lambar tagulla a Wasannin Commonwealth na 2014 a wasan karshe na mita 200 a Glasgow. Ya gama na 4 a Gasar Cin Kofin Duniya ta 2015 kuma ya lashe lambar tagulla a Gasar Cin Kofin Turai ta 2015 (SC) a tseren tseren mita 200. Ya shiga gasar zakarun Turai ta 2016
, kuma ya gama na 4 a wasan karshe na tseren tseren mita 200 a Wasannin Olympics na 2016 a Rio. Ya ci gaba da lashe lambar azurfa a Gasar Cin Kofin Duniya ta 2016 (SC). Willis ya shiga wasan karshe na mita 100 da mita 200 a gasar wasannin Commonwealth na 2018, inda ya gama na 8 da na 4. A watan Yulin 2018, Willis ya yi ritaya daga gasar yin iyo.