▁back ▁into ▁play ▁( to ▁allow ▁the ▁chain ▁crew ▁to ▁get ▁into ▁place ), ▁as ▁is ▁done ▁in ▁college ▁football . ▁Like ▁college ▁football , ▁it ▁recognized ▁the ▁two - point ▁conversion ▁( that ▁was , ▁at ▁that ▁time , ▁only ▁recognized ▁in ▁the ▁C FL ▁at ▁the ▁professional ▁level ) ▁that ▁would ▁not ▁be ▁put ▁into ▁NFL ▁rules ▁until ▁ 1 9 9 4 . ▁▁ ▁For ▁its ▁final ▁season ▁in ▁ 1 9 8 5 , ▁a ▁method ▁of ▁challeng ing ▁officials ' ▁r ul ings ▁on ▁the ▁field ▁via ▁instant ▁re play ▁( using ▁a ▁system ▁that ▁is ▁almost ▁identical ▁to ▁that ▁used ▁by ▁the ▁NFL ▁today ; ▁the ▁NFL ▁would ▁adopt ▁its ▁first ▁instant ▁re play ▁system ▁[ but ▁in ▁a ▁different ▁form ▁than ▁its ▁current ▁one ] ▁in ▁ 1 9 8 6 ). ▁ ▁Notable ▁people ▁and ▁achiev ements ▁ ▁US FL ▁al umn i ▁in ▁the ▁Pro ▁Football ▁Hall ▁of ▁Fame ▁As ▁of ▁August ▁ 2 0 1 5 , ▁there ▁are ▁eight ▁US FL ▁al umn i ▁who ▁are ▁en sh r ined ▁in ▁the ▁Pro ▁Football ▁Hall ▁of ▁Fame : ▁▁ ▁George ▁Allen ▁( co ach ) ▁– ▁Chicago ▁Bl itz ▁ 1 9 8 3 ▁& ▁Arizona ▁W r ang lers ▁ 1 9 8 4 ▁– ▁H OF ▁Class ▁ 2 0 0 2 ▁ ▁Sid ▁Gill man ▁( front ▁office ▁consult ant ) ▁– ▁Oklahoma ▁Out la ws ▁and ▁Los ▁Angeles ▁Express ▁ 1 9 8 4 ▁– ▁H OF ▁Class