Football

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Football
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Did That Just Happen ?

• http//www.youtube.com/watch?v7zuUIhv8z3Mfeature
  related

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History

• 1892 the first professional football team
  assembled
• 1920 American Football Association formed
• 1922 National Football League (NFL)
• Currently 32 NFL Teams 16 in AFC and 16 in NFC

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How the start of play occurs

• Traditionally a referee will flip a coin to give
  each team an equal opportunity to decide which
  team gets to make the first decision.
• The flip occurs between team captains.
• Once a team wins the coin toss they will decide
  to accept possession or defer the ball until that
  start of the second half.
• If they are to receive possession first the
  opposing team will kick the ball off from at tee
  at the 35 yard line.
• If they choose to defer the ball, then they kick
  it off to the opposing team until the third
  quarter. At the start of the third quarter the
  opposing team will kick off to them allowing them
  to have possession first in the second half.

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How game is played

• Football is a contact sport. The team is broken
  into two main categories offense and defense.
• The offense is the side that has possession of
  the ball.
• The defensive side is the side that is trying to
  stop the offensive side from scoring.
• Both sides are made up of 11 players. Each player
  has a different position.
• The offensive team is trying to get the ball to
  pass the goal line of the opposing team by
  throwing/catching, running, or in certain
  situations kicking.

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How game is played continued.

• The offensive team earns up to 4 downs every ten
  yards. The downs are 4 attempts at moving the
  ball in hopes of scoring or earning a 1st down.
• For example the first play on the offensive side
  of the ball is 1st and 10 . This represents the
  1st down of 4 possible and 10 yards to go before
  earning a new set of 4 downs.

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Offensive positions

• Quarterback
• Wide Receiver
• Running Back
• Tight End
• Guard
• Tackle
• Center

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Defensive positions

• Tackle
• Guard
• Defensive End
• Linebacker
• Safety
• Cornerback

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scoring

• Touchdown- occurs after the ball crosses the goal
  line into the endzone. This occurs by a passing
  play or running play. A touchdown is 6 points.
• Point After Attempt- occurs after a touchdown
  where the ball is kicked through the uprights for
  1 point
• Two Point Conversion- occurs after a touchdown
  where the ball is either throw
• Field Goal- occurs when the kicker kicks the ball
  through the uprights in place of a touchdown. A
  field goal is 3 points.
• Safety- occurs when an offensive is
  sacked/tackled in his own endzone. A safety is
  worth 2 points.

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Boundary terms and specifications

• Professional (NFL) Football Field
• Overall Dimensions
• All football fields share the same overall
  outside dimensions. The outside measurements
  below include the End Zone. High School, College
  and the NFL all have overall outside dimensions
  of
• Length 360 feet or 120 yards
• Width 160 feet or 53 1/3 yards

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Boundaries

• End Zone
• NFL endzones are10 yard deep. This measurement is
  shared by all levels of american play.
• End Line
• A six foot end line border marks the back of the
  end zone.
• Team Benches
• Team benches are placed along the Restraining
  Line between the 30 yard markers

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Football Terms and boundaries

• Field Numbers
• NFL field numbers are 6 feet high and 4 feet
  wide.
• Restraining Line
• NFL fields have a 6 line along the side lines
  that designate the closest non-players can be to
  the field.
• Hash Marks
• NFL Hash marks are the narrowest of all the
  levels of football play. They measure 70 feet, 9
  inches from the sidelines and are 18 feet, 6
  inches wide. (same as the width of the goal
  posts)
• High School the width of the hashmarks are 53
  feet, 4 inchesCollege hashmarks are 40 feet
  wide
• Goal Posts
• As mentioned before, NFL goal posts are 10 feet
  high and 18 feet, 6 inches wide

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Football Field Diagram