Isai Walter Simpson (akaberekwa musi wa6 Gumiguru 1990) mutambi wekushambira wekuGrenada. Mumitambo yeOlympics ya2012, akakwikwidza mumakwikwi evarume emamita zana akasununguka
, vachipedza vari pachinzvimbo chechi43 chose chose mumakwikwi, vachikundikana kupinda mumasemifainari. Akakwikwidzawo mumakwikwi emamita zana pa2013 World Aquatics Championships. Akazvarwa muBrooklyn, akakwikwidza padanho rekoreji yeNCAA Chikamu II Nova Southeastern University Sharks.