One-platoon system

Common card · No. 294707

The one-platoon system, also known as "iron man football", is a rule-driven substitution pattern in American football whereby the same players are expected to stay on the field for the entire game, playing both offense and defense as required. Players removed for a substitute are lost to their teams for the duration of the half or quarter, depending on the rule variant in use. Existing alternatively is the two-platoon system (or simply the "platoon system"), which makes use of separate offensive and defensive units. In the contemporary game, third platoons of special teams players for kicking situations are also used. Each system has been used at different times in American college football and in the National Football League. In the college game, the major rules switch allowing two platoons came ahead of the 1941 season – a change first emulated by the NFL in 1943. Due to budgetary pressures associated with expanded scholarship and travel costs, member schools of the National Collegiate...

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