The 49ers won Super Bowl championships in the 1981, 1984 and 1988 seasons. Walsh served as 49ers head coach for 10 years, and during his tenure he and his coaching staff perfected the style of play known popularly as the West Coast offense. Walsh was nicknamed "The Genius" for both his innovative play calling and design. Walsh would regularly script the first 10–15 offensive plays before the start of each game. In the ten years during which Walsh was the 49ers' head coach, San Francisco scored 3,714 points (24.4 per game), the most of any team in the league during that span.