John Mayberry's Three-Home-Run Game, 1977

John Mayberry hit three home runs in one game for the Kansas City Royals against the Toronto Blue Jays on June 1, 1977. The Kansas City Royals won 11–3.

The game was played at Exhibition Stadium in Toronto. The announced attendance was 33,004. The game took 2h 42m. It was a night game, at 65 degrees.

John Mayberry did it twice in all. Bill Singer started for the Toronto Blue Jays. Bill Kunkel umpired behind the plate. It is the fourth of seven three-home-run games the archive records that season.