Mezue ahịrịokwu na-esonụ: Na 2005 ICF Sprint Canoe World Championships, Johnson kwụsịrị 8th na K-1 500 m na 8th na K-1 1000 m. Na 2006 ICF Sprint Canoe World Championships, Johnson kwụsịrị nke isii na K-1 500 m na nke asaa na K-1 1000 m. Na
2007 ICF Sprint Canoe World Championships, Johnson kwụsịrị nke anọ na K-1 1000 m na nke ise na K-1 500 m. Na 2010 ICF Sprint Canoe World Championships, Johnson na onye otu ya Krisztina Fazekas-Zur kwụsịrị 10th na K-2 500 m ihe omume, na-emeri B-ikpeazụ.