Martin James Guptill is a former New Zealand cricketer who played as an opening batsman in all formats of the game but pre-dominantly in limited-overs. Guptill is the first cricketer from New Zealand and the fifth overall to have scored a double century in a One Day International match and holds the current record for the highest individual score in Cricket World Cup matches and the second highest score in One Day Internationals of 237 not out. In March 2021, Guptill played in his 100th T20I match. He was also a part of the New Zealand squad to finish as runners-up at the 2015 Cricket World Cup.

The Cricket World Cup is the international championship of One Day International (ODI) cricket. The event is organised by the sport's governing body, the International Cricket Council (ICC), every four years, with preliminary qualification rounds leading up to a finals tournament. The tournament is one of the world's most viewed sporting events and considered as the "flagship event of the international cricket calendar" by the ICC. It is widely considered the pinnacle championship of the sport of cricket.