Here is a brief glossary explaining some of the terms and intricacies of Arena football:
Ball: The official football of the Arena League is the Wilson Ironman football. It is the same size and weight of the football used in the National Football League.
Defensive specialists: Theseare players who do not have to play offense. These two players are usually defensive backs who are assigned to the opponents' best receiver and offensive specialist.
Drop Kick: A field goal or extra point attempt that is dropped on the surface then kicked through the uprights. A dropped-kick field goal is worth four points while a dropped-kick extra point is worth two points.
Internet: The official site of the arenafootball2 league is at www.af2.com.
In the stands: If a ball leaves the playing surface and reaches the seats, fans may keep the ball. It is estimated that the Arena Football League gave away between 15-20 football per game last season.
Ironman: Participants who play both offense and defense are typically called this. Normally, wide receivers play defensive back or linebacker while offensive linemen play on the defensive line. Six players on each team must play both ways, with limited substitutions.
Offensive motion: Unlike college or pro football, one offensive back may go into forward motion before the snap of the ball.
Offensive specialist: This player does not have to play on the defensive side of the ball. He is usually a wide receiver and a kick returner who is one of the most dangerous players on the field.
Overtime: In a 15-minute period, each team will get an opportunity to score. If, after each team has had one chance to score, the game is tied, then the first team to score wins.
Rebound nets: The nets hang behind the end zone and are approximately 30-feet wide and 32-feet high with a crossbar height of 15 feet above the surface. The nets are stretched so that a missed kick will rebound off the net and back into play. Also, a quarterback can complete a pass to a wide receiver with a toss off the net.
Sideline barriers: These walls are made of a high-density foam and measure three inches thick. The barriers are 48 inches high, meaning that some players may go over the walls throughout the course of the season.
Stunting or Twisting: A defensive lineman must power past an offensive lineman straight on. If he fails to do so, a penalty may be called.
Tight End: A position rarely used in Arena football. One offensive lineman may become a tight end by raising his arm and declaring himself a tight end before the snap.