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Facts & Ground Rules

Miller Park's unique dimensions are designed to maximize every aspect of watching - and playing - America's Pastime. Please observe the following ground rules.

  • Universal Ground Rules

    The Commissioner's Office has issued the following Universal Ground Rules for use in all Major League ballparks this season. Ground Rules pertaining to individual parks are posted separately in those parks.

    • Ball on the top step (lip) of the dugout is in play. No equipment is permitted to be left on the top step (lip) of the dugout. If a ball hits equipment left on the top step it is dead.
    • A player is not permitted to step or go into a dugout to make a catch.
    • A player is permitted to reach into a dugout to make a catch. If a player makes a catch outside the dugout and the player's momentum carries him into the dugout, then the catch is allowed and the ball remains alive as long as the player does not fall while in the dugout. See Rule 6.05(a).
    • A batted ball in flight can be caught between or under railings and around screens.
    • A catch may be made on the field tarp.
    • Batted or thrown ball resting on the rotating signage behind home plate or along first base or third base stands is in play.
    • The facings of railings surrounding the dugout and photographers' areas are in play.
    • Any cameras or microphones permanently attached on railings are treated as part of the railings and are in play.
    • Any recessed railings or poles that are in the dugout and photographers' areas are out of play and should be marked with red to mark them out of play.
    • Robotic cameras attached to the facing of the backstop screen are considered part of the screen.
    • A batted ball striking the backstop camera is considered a dead ball.
    • A thrown ball striking the backstop camera is considered in play.
    • A ball striking the guy wires that support the backstop is a dead ball.
    • A ball lodging behind or under canvas on field tarp is out of play.
    • A ball striking the field tarp and rebounding onto the playing field is in play.
    • No chairs can be brought out of the dugout or bullpen and onto the playing field.
    • All yellow lines are in play.

    Official Ground Rules >>

  • Dugout and Photographers' Areas

    • Ball entering dugout or photographers'areas: Out of Play (Award by Book Rule).
    • Ball on top step (lip) of dugout: In Play.
    • Ball striking facing over dugout: Out of Play (Award by Book Rule).
    • Ball striking railings or netting around dugout and photographers' areas: In Play.
    • Player cannot go into dugout to make a catch: Out of Play.
    • Batted ball caught by fielder who subsequently steps into dugout: In Play (Unless fielder falls in dugout - Book Rule).
  • Backstop Area

    • Pitched or thrown ball lodging in signage: Out of Play (Awarded by Book Rule).
    • Pitched or thrown ball resting on ledge of signage: In Play.
  • Tarp Area

    • Thrown or fair ball that lodges behind or under canvas on field tarp: Out of Play (Awarded by Book Rule).
    • Ball striking canvas on field tarp and rebounding onto playing field: In Play.
  • Roof

    • Batted ball strikes roof, roof truss, or roof cable over fair territory: In Play. If caught by fielder, batter is out and runners advance at own risk.
    • Batted ball strikes roof, roof truss, or roof cable over foul territory: Dead Ball.
  • Outfield

    • Batted ball in flight striking portion of pad above the horizontal yellow line in fair territory of left field corner: Home Run.
    • Batted ball in flight striking blue portion of wall in left field corner: Foul.
    • Fair bounding ball striking yellow portion of pad in left field corner: Two Bases.
    • Fair bounding ball striking blue portion of wall in left field corner: In Play.
    • Fair batted bounding or thrown ball striking the green safety railings on the walls down the left field and right field lines in fair territory and rebounding onto the playing field: In Play.
  • Movement of Roof and Exterior Wall Panels

    • Please refer to Commissioner's Bulletins regarding opening and closing retractable roofs.
  • Miller Park Roof Information

    Undoubtedly, Miller Park's most unique feature is the roof. The only fan-shaped convertible roof in North America guarantees perfect conditions for every game. The 12,000-ton, seven-panel roof opens and closes almost silently in just 10 minutes.

    Three panels, each as big as the roof over the Bradley Center in downtown Milwaukee, move over a fixed panel on the third base side. Two more panels move over a fixed panel on the first base side. The roof panels pivot on a fixed point behind home plate, and are each powered by a 60-horsepower engine, or "bogey," that moves along a semi-circular rail system, or "track beam," about 150-feet above the exterior outfield wall.

    Inside, the roof reaches 200 feet above the playing field. Outside, the highest arch towers 30 stories, the newest fixture in Milwaukee's skyline.

  • Miller Park Dimensions

    The field dimensions, designed with the input of Hall of Famer and Brewers legend Robin Yount, are unique and asymmetrical. Yount said he designed the field to play to what he considers the most exciting play in baseball — a runner trying to stretch a single into a double or a double into a triple.

    Field Surface: Grass

    Seating Capacity: 41,900

    Size of building: 1.2 million square feet or 25 acres

    Size of overall site: 265 acres

    Span of roof: 600 feet covering 10.5 acres

    Height of roof at the peak: 330 feet

    Concrete: 70,000 cubic yards

    Concrete piers drilled: 321

    Steel foundation piles: 1,576

  • Weight

    Total weight: 500,000 tons

    Weight of roof: 12,000 tons

    Structural steel: 24,000 tons

    Rebar: 8,500 tons

  • Fan Extras

    Sports light fixtures: 650 consuming 969,000 watts of power

    Television monitors: 550

    Stereo speakers: 2,000

    Restrooms: 33 mens, 33 womens

    Permanent concession stands: 30

    Luxury suites: 65

  • Did You Know...

    Number of baseballs to fill Miller Park: 4,655,926,995

    Weight of Miller Park: 62,500,000 16-pound bowling balls

    Length of handrails at Miller Park: 8,000 baseball bats end-to-end

    Size of excavation: 16,500 full dump trucks