About NFL

The NFL is a professional American football league consisting of 32 teams, divided equally with the National Football Conference (NFC) and the American Football Conference (AFC). The NFL ranks first among professional sports leagues in the world by revenue. NFL is not only popular in America but now it is popular all over the world. The NFL 17 week regular season runs from early September to late December, with each team playing 16 games and having one bye week.

Founded: August 20, 1920, 98 years ago
Number of teams: 32
Sport: American football
Commissioner: Roger Goodell
Founders: Jim Thorpe, George Halas, Ralph Hay, Frank Nied
Current season: 2018
Sports American football
Inaugural season: 1920
Commissioner: Roger Goodell
Country United State
Headquarters: New York City
Most recent: Philadelphia Eagles
champion: 4th title 
Most titles: Green Bay Packers (13 titles)
TV partner: CBS, Fox, NBC, ESPN, NFL Network, Telemundo Deportes
Official website: NFL

Player Selections                                            Positions

Center (C)Corner Back (CB)Defensive Back (DB)Defensive End (DE)
Defensive Lineman (DL)Defensive Tackle (DT)Full Back (FB)Free Safety (FS)
Guard (G)Half Back (HB)Placekicker (K)Kick Returner (KR)
Line Backer (LB) Long Snapper (LS)Offensive Tackle (OT)Offensive Lineman (OL)
Nose Tackle (NT)Punter (P)Punt Returner (PR)Quarter Back (QB)
Running Back (RB)Safety (S)Strong Safety (SS)Tail Back (TB)
Tight End (TE)Wide Receiver (WR)

NFL Rules
Each team has 11 playersIf a game is tied at the end of 4 quarters, overtime is played. The coin is tossed to determine which team will possess the NFL ball first. The victor of the coin toss can choose to give the ball or receive the ball. If the 1st possession results in a field goal, the other team is given possession to match or better the field goal, therefore continuing the game. If the 1st possession results in a touchdown or safety, the scoring team wins. The NFL during the regular season, one overtime period is played with each team receiving two-time outs. If both teams are tied next to the 10 minutes overtime, the game officially ends in a tie. In the playoffs, 15 minutes overtime periods continue until a victor is determined. Overtime follows after a 3-minute intermission following the end of the regulation game. Prior to the start of overtime, a coin flip is performed where the captain of the visiting team calls the toss. The team that wins the coin flip has the option to either catch the kickoff or choose the side of the field they wish to defend.


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Duration
The games are 1 hour long, divided into four quarters of 15th minutes each. In high school football, 12th minute quarters are usually played. The clock is stopped frequently, however, with the result that a typical college or professional game can exceed 3 hours in duration. The clock is stopped frequently, however, with the result that a typical college or professional game can exceed 3 hours in duration. The referee controls the game clock and stops the clock after an incomplete pass or any play that ends out of bounds. In amalgamation, each team is allowed 3 timeouts in each half that they may use at their own discretion. The clock usually runs during the action of plays, with a few exceptions known as untimed plays.