Pedzisa mutsara unotevera: Guy akazozivikanwa munyika yose paakakunda menduru mbiri dzegoridhe paWorld Championship mumakwikwi e200-metre freestyle uye 4×200-metre freestyle relay pa2015 World Aquatics Championships. Anoshambira zvikuru, muna 2016, akahwina sirivha mumakwikwi e4x200m freestyle relay uye
4x100m medley relay kumaOlympics eRio, achipedza wechina mumutambo wevanhu 200 metres freestyle. Akabatsira kudzivirira varume 4 x 200 metres freestyle relay zita renyika muna 2017, uye akashambira gumbo re butterfly kubatsira Great Britain kuti iwane goridhe mu4 x 100 metres medley relay pa2019 World Aquatics Championships. Guy ndiye akahwina muMitambo yeCommonwealth uye akava shasha dzomuEurope kanomwe mumakwikwi akasiyana-siyana.