Robert Brown Thomson was a Scottish-born American professional baseball player, nicknamed "the Staten Island Scot". He was an outfielder and right-handed batter for the New York Giants, Milwaukee Braves (1954–57), Chicago Cubs (1958–59), Boston Red Sox (1960), and Baltimore Orioles (1960). His pennant-winning three-run home run for the Giants in 1951 is popularly known as the "Shot Heard 'Round the World", and is one of the most famous moments in baseball history. It overshadowed his other accomplishments, including eight 20-home-run seasons and three All-Star selections. "It was the best thing that ever happened to me", he said. "It may have been the best thing that ever happened to anybody."

The New York Giants were a Major League Baseball team in the National League that began play in the 1883 season as the New York Gothams and became known as the Giants in 1885. They continued as the New York Giants until the team moved to San Francisco, California after the 1957 season, where the team continues its history as the San Francisco Giants. The team moved west at the same time as its longtime rival, the Brooklyn Dodgers, also in the National League, moved to Los Angeles in southern California as the Los Angeles Dodgers, continuing the National League, same-state rivalry.