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In American football, a T formation (frequently called the full house formation in modern usage) is a formation used by the offensive team in which three running backs line up in a row about five yards behind the quarterback, forming the shape of a "T".〔Bible, pp. 115-117.〕 Numerous variations of the T formation have been developed, including the Power-T, where two tight ends are used, the Pro T, which uses one tight end and one wide receiver, or the Wing T, where one of the running backs (or wingback) lines up one step behind and to the side of the tight end. Any of these can be run using the original spacing, which produced a front of about seven yards, or the Split-T spacing, where the linemen were farther apart and the total length of the line was from 10-16 yards.〔〔Faurot, pp. 12-16.〕 ==Obsolescence== The T formation is often said to be the oldest offensive formation in American football and is claimed to have been invented by Walter Camp in 1882. However, as the forward pass was legalized, the original T became obsolete in favor of formations such as the single wing. Innovations, such as a smaller, more throwing-friendly ball, along with the invention of the hand-to-hand snap in the 1930s, led to the T's revival. The original T formation is seldom used today, but it was successful in the first half of the 20th century and led to a faster-paced, higher-scoring game. The T formation was made famous by Stanford University under Clark Shaughnessy in 1940, Notre Dame under Frank Leahy the Fighting Irish won four national titles in the 1940s, and by the University of Oklahoma in the 1950s to win 47 games in a row and three national titles. It was also the key weapon used by the Chicago Bears, who had used the T formation since the team's inception in 1920, to defeat the Washington Redskins, 73–0, in the 1940 NFL Championship Game and immortalized afterward in their fight song. The formation is still used in a few instances at the high school level. Some smaller colleges and high schools, particularly in the Midwest, still use the T. It is also still used on some levels as a goal line formation (often called a "full house" backfield today). Its simplicity, and emphasis on running, makes it particularly popular as a youth football formation. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「T formation」の詳細全文を読む スポンサード リンク
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