The number of players that are permitted to be on the field in an active association football and American football match is 22. National Football League Hall of Famer Emmitt Smith wore the number 22 during his Dallas Co...

www.reference.com/world-view/interesting-number-22-2d614fbdde650402

Some interesting facts about the number 30 are that it is an even number that has eight factors, of which three are the prime numbers 2, 3 and 5. The prime factorization of 30 is 2 x 3 x 5. There are only 4 months in the...

www.reference.com/world-view/interesting-number-30-e4bd9039f19c5993

The number six is the smallest perfect number. That means that it is the first number where the sum of its factors equals the number. The factors of the number six are one, two and three. The sum of one, two and three is...

www.reference.com/world-view/interesting-number-six-f3850417d316e4bd

In both soccer and American football, a team may have no more than 11 players on the field. Extremely few commercial products or natural phenomena have any relationship to the number 11.

www.reference.com/world-view/things-come-groups-11-b891088af8f4ec8a

The sides of a hendecagon (sometimes also known as an undecagon or unidecagon), the players on an association football (soccer) team and the players on a cricket team all come in sets of 11. Likewise, at least according ...

www.reference.com/world-view/comes-sets-eleven-c9145a0a37ce824f

A standard American football field is 1.32 acres. The standard size for an American football field, including the end zones, is 360 feet long by 160 feet wide, or 57,600 square feet.

www.reference.com/world-view/many-acres-football-field-a20196b5a2b4acc8

According to the Red and Black website, flexibility is important for American football because it gives players a physical and mental advantage over other teams. The site recommends that yoga be added to a player's regul...

www.reference.com/world-view/flexibility-important-football-25cc80fb66f27690