Tusi se faʻaauau mo lenei palakalafa - Na faʻauʻu Willis i le tulaga 4 i le 2013 World Championships ma le 2013 European Championships (SC) (uma i le 200 mita breaststroke). Na faaiu lona 4 i le 2014 European Championships
Na manumalo foʻi o ia i le pine apamemea i le 2014 Commonwealth Games i le 200-mita breaststroke i Glasgow. Na faaiu lona 4 i le 2015 World Championships ma manumalo ai i se pine apamemea i le 2015 European Championships (SC) i le 200-meters breaststroke. Na auai o ia i le 2016 European Championships, ma faʻaiʻu i le tulaga 4 i le faʻaiuga o le 200-mita breaststroke i le 2016 Summer Olympics i Rio. Na ia manumalo i se pine siliva i le 2016 World Championships (SC). Na faia e Willis le faaiuga mo le 100 mita ma le 200 mita i le 2018 Commonwealth Games, lea na ia faamaeaina ai le 8th ma le 4th. I le masina o Iulai 2018, na litaea ai Willis mai le tauvaga aau.