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The two-platoon system is a tactic in American football enabled by rules allowing unlimited substitution adopted during the 1940s. The "two platoons", offense and defense, are an integral part of the game today.
The one-platoon system, also known as "iron man football", is a rule-driven substitution pattern in American football whereby the same players were expected to stay on the field for the entire game, playing both offense and defense as required. Players removed for a substitute were lost to their teams for the duration of the half (until 1932 ...
Because of these rules, various leagues of American football have enacted strict rules of uniform numbering so officials may more easily judge which players were eligible and which were not at the start of a play. For example, in college football, ineligible players wear numbers 50–79, while eligible receivers wear 1–49 or 80–99. Even ...
The NCAA football rules committee issued guidance Wednesday to close a loophole that allowed second-ranked Oregon to exploit an illegal substitution penalty late in its victory over Ohio State to ...
The NCAA issued a rules interpretation that will allow offenses to reset clock if 12 or more defenders participate in a play late in a half.
Following Oregon football's dramatic win over Ohio State, the NCAA announced a rules clarification involving 12 defenders on the field.
The rule was enacted in response to the depleted team rosters of the World War II period and followed a similar change made to the NCAA's college football rule book in 1941. [2] Previously, under the one-platoon system , players competed both on offense and defense until a substitution was made, at which time the player removed could not return ...
Here's a look at college football's new rules for the 2024 season, including coach-to-player communication, a two-minute timeout and more