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Safeco Field Facts & Ground Rules

  • safeco field stats
  • The Name

    • Safeco Field Name

    An investment in the Safeco Field naming rights was made by Safeco Insurance, a Seattle-based insurance and investments company. Founded in 1923, Safeco Insurance shares a commitment with the Mariners to invest in and provide service to the communities where our customers, fans and employees live, work and raise their families. Safeco Insurance has been a major sponsor of Mariners community relations projects and Mariners Care. The Mariners are proud of our partnership with Safeco Insurance.

  • The Roof

    • roof

    The ballpark's one-of-a-kind retractable roof is designed to cover but not enclose the ballpark, thus preserving an open-air environment. The structure covers nearly 9 acres, weighs 22 million pounds, and contains enough steel to build a skyscraper 55 stories tall. The three movable panels glide on 128 steel wheels powered by 96 ten horsepower electric motors. A push of a button closes or opens the roof in an average of 10-20 minutes (depending on wind and other weather conditions). The roof is self-grounded (in the event of lightning strikes) and is designed to withstand 6-7 ft. of snow and sustained winds of up to 70 mph.

    Ball Hitting Roof Trusses

    Batted ball strikes roof truss over fair territory: In Play.

    • If caught by fielder, batter is out and runners advance at own risk.

    Batted ball strikes roof truss over foul territory: Dead Ball.

    Movement of Roof

    Please refer to Commissioner's Bulletin regarding opening and closing of retractable roofs.

  • Scoreboard System

    • scoreboard

    Safeco Field features one of the most comprehensive scoreboard systems in Major League Baseball, including 11 electronic displays and an old-fashioned hand-operated scoreboard in left field. A new high definition video display system was installed for the 2013 season, replacing the main scoreboard in centerfield. Measuring 56.7 'x 201.5' (11,425 square feet), the new HD LED screen is the largest in Major League Baseball and one of the largest in professional sports. The out-of-town scoreboard in left field displays current inning scores of games in progress from around the Major Leagues. Two, first-of-their-kind play-by-play boards along the first and third base lines display running summaries of plays to help fans follow the action. Four auxiliary boards display player at-bat information, pitch speed and additional game-in-progress information.

  • Playing Field

    • field

    Safeco Field's playing surface is a custom designed state-of-the-art field. It features a specially designed drainage system and a custom blend of four kinds of Kentucky bluegrass and two kinds of perennial rye grass to provide the optimal playing surface for the athletes, the retractable roof, and the Northwest climate. The drainage system includes layers of drainage pipe, pea gravel, sand, and grass. A spider web of one-inch plastic hose circulates hot water under the grass to bring it out of dormancy in time for Opening Day, and also compensate for shade and low levels of direct sunlight.

    Outfield Area
    Netting in right field corner in foul territory is above and beyond the wall. A batted ball that bounds into the netting is a dead ball whether or not it rebounds onto the playing field: Two Bases.

    A ball must enter the dugout to be considered a dead ball.

    Photographers' Areas
    The ball is "in play" if it hits any of the railings defining the photographer wells and bounces back onto the playing field.

    Universal Ground Rules