. ▁ ▁The ▁last ▁player ▁of ▁the ▁US FL ▁on ▁an ▁NFL ▁ro ster ▁was ▁Philadelphia ▁Stars ▁pun ter ▁Se an ▁Land eta , ▁who ▁was ▁signed ▁in ▁late ▁ 1 9 8 6 ▁by ▁the ▁New ▁York ▁Gi ants . ▁He ▁officially ▁announced ▁his ▁ret irement ▁on ▁March ▁ 6 , ▁ 2 0 0 8 , ▁the ▁ 2 5 th ▁anni versary ▁of ▁the ▁first ▁US FL ▁game . ▁( He ▁last ▁played ▁in ▁ 2 0 0 6 ▁but ▁he ▁did ▁not ▁officially ▁ret ire ▁during ▁the ▁ 2 0 0 7 ▁season .) ▁ ▁The ▁last ▁non - k icker ▁to ▁ret ire ▁was ▁quarter back ▁Doug ▁Fl ut ie , ▁who ▁played ▁in ▁both ▁the ▁C FL ▁and ▁NFL ▁until ▁ 2 0 0 5 . ▁ ▁Rule ▁changes ▁The ▁US FL , ▁compared ▁to ▁other ▁professional ▁le agues ▁of ▁the ▁late ▁ 2 0 th ▁and ▁ 2 1 st ▁centuries , ▁did ▁not ▁rad ically ▁change ▁the ▁rules ▁of ▁the ▁game ; ▁its ▁rules ▁largely ▁res emble d ▁a ▁hy brid ▁of ▁the ▁NFL ▁and ▁college ▁football ▁rule books . ▁The ▁league ' s ▁rule ▁on ▁stopping ▁the ▁clock ▁was ▁one ▁example ▁of ▁this ▁hy brid ▁approach : ▁outside ▁the ▁two - min ute ▁warning , ▁the ▁clock ▁ran ▁between ▁plays ▁after ▁a ▁first ▁down ▁like ▁in ▁the ▁NFL , ▁while ▁after ▁the ▁warning , ▁it ▁stopped ▁between ▁the ▁end ▁of ▁the ▁play ▁that ▁earned ▁a ▁first ▁down ▁and ▁the ▁pla cement ▁of ▁the ▁ball