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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 ...
Free substitution or rolling substitution is a rule in some sports that allows players to enter and leave the game for other players many times during the course of a game, generally during a time-out or other break in live play; and for coaches to bring in and take out players an unlimited number of times.
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.
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 ...
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The substitution of absent players happened as early as the 1850s, for example from Eton College where the term emergencies is used. [5] Numerous references to players acting as a "substitute" occur in matches in the mid-1860s [ 6 ] where it is not indicated whether these were replacements of absent players or of players injured during the match.
Ohio State coach Ryan Day said Thursday that he agreed with the NCAA’s recently issued rule interpretation for an illegal substitution penalty.. Following the change made by the association the ...