A wide receiver is an offensive position in American and Canadian football, and is the key player in most of the passing plays. Only players in the backfield or the ends on the line are eligible to catch a forward pass. The two players who begin play at the ends of the offensive line are eligible receivers, as are all players in the backfield. The backs and ends who are relatively near the sidelines are referred to as "wide" receivers. At the start of play, one wide receiver may begin play in the backfield, at least a yard behind the line of scrimmage, as is shown in the diagram at the right. The wide receiver on the right begins play in the backfield. Such positioning allows another player, usually the tight end, to become the eligible receiver on that side of the line. Such positioning defines the strong side of the field. This is the right side of the field in the diagram shown.
The wide receiver (WR) is a position in American and Canadian football that functions as the pass-catching specialist. Wide receivers (also referred to as wideouts or simply receivers) are among the fastest and most agile players in the game, and they are frequent highlight-reel favorites. Examples of modern wide receivers include Wes Welker, Larry Fitzgerald, Brandon Marshall, Andre Johnson, Calvin Johnson, A.J. Green, and Julio Jones.