Canadian ice hockey player Ernie McLea scores the first hat-trick in Stanley Cup play, and the Cup-winning goal as the Montreal Victorias defeat the Winnipeg Victorias 6–5.

Ice hockey is a team sport played on ice skates, usually on an ice skating rink with lines and markings specific to the sport. It belongs to a family of sports called hockey. Two opposing teams use ice hockey sticks to control, advance, and shoot a vulcanized rubber hockey puck into the other team's net. Each goal is worth one point. The team with the highest score after an hour of playing time is declared the winner; ties are broken in overtime or a shootout. In a formal game, each team has six skaters on the ice at a time, barring any penalties, including a goaltender. It is a full contact game and one of the more physically demanding team sports.

Ernest Hope "Ernie" McLea was a Canadian amateur ice hockey player, in the era before professional hockey. McLea played in the 1890s for the Montreal Victorias and was a member of four Stanley Cup-winning teams. He scored the first hat trick in Stanley Cup play, and scored the Stanley Cup-winning goal in a challenge game in 1896.

A hat-trick or hat trick is the achievement of a generally positive feat three times in a match, or another achievement based on the number three.

The Stanley Cup is the championship trophy awarded annually to the National Hockey League (NHL) playoff champion. It is the oldest existing trophy to be awarded to a professional sports franchise in North America, and the International Ice Hockey Federation (IIHF) considers it to be one of the "most important championships available to the sport". The trophy was commissioned in 1892 as the Dominion Hockey Challenge Cup and is named after Lord Stanley of Preston, the governor general of Canada, who donated it as an award to Canada's top-ranking amateur ice hockey club. The entire Stanley family supported the sport, the sons and daughters all playing and promoting the game. The first Cup was awarded in 1893 to the Montreal Hockey Club, and winners from 1893 to 1914 were determined by challenge games and league play. Professional teams first became eligible to challenge for the Stanley Cup in 1906. In 1915, the National Hockey Association (NHA) and the Pacific Coast Hockey Association (PCHA), the two main professional ice hockey organizations, reached an agreement in which their respective champions would face each other annually for the Stanley Cup. It was established as the de facto championship trophy of the NHL in 1926 and then the de jure NHL championship prize in 1947.