Kammala jumla mai zuwa: Willis ya gama 4th a 2013 World Championships da kuma 2013 Turai Championships (SC) (duka biyu a 200-mita nono). Ya gama na 4 a cikin
Gasar zakarun Turai ta 2014 kuma ta 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 halarci Gasar Zakarun Turai ta 2016, kuma ya gama na 4 a wasan karshe na tseren mita 200 a gasar Olympics ta 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.