▁preserved ▁by ▁the ▁Knight ▁Tem pl ars ▁through ▁the ▁ages . ▁ ▁References ▁ ▁C ited ▁bibli ography ▁ ▁C ited ▁web ▁sources ▁▁▁▁▁ ▁Category : 1 5 6 0 ▁birth s ▁Category : 1 6 3 6 ▁death s ▁Category : Pal ai olog os ▁dynast y ▁Category : Ital ian ▁people ▁of ▁Greek ▁descent <0x0A> </s> ▁T ack le ▁is ▁a ▁playing ▁position ▁in ▁grid ir on ▁football . ▁Histor ically , ▁in ▁the ▁one - pl ato on ▁system ▁pre val ent ▁in ▁the ▁late ▁nin ete enth ▁and ▁early ▁tw enti eth ▁centuries , ▁a ▁tack le ▁played ▁on ▁both ▁off ense ▁and ▁defense . ▁In ▁the ▁modern ▁system ▁of ▁special ized ▁units , ▁off ensive ▁tack le ▁and ▁def ensive ▁tack le ▁are ▁separate ▁positions , ▁and ▁the ▁stand - alone ▁term ▁" t ack le " ▁refers ▁to ▁the ▁off ensive ▁tack le ▁position ▁only . ▁The ▁off ensive ▁tack le ▁( OT , ▁T ) ▁is ▁a ▁position ▁on ▁the ▁off ensive ▁line , ▁left ▁and ▁right . ▁Like ▁other ▁off ensive ▁lin emen , ▁their ▁job ▁is ▁to ▁block : ▁to ▁phys ically ▁keep ▁def enders ▁away ▁from ▁the ▁off ensive ▁player ▁who ▁has ▁the ▁football ▁and ▁enable ▁him ▁to ▁advance ▁the ▁football ▁and ▁eventually ▁score ▁a ▁touch down . ▁The ▁term ▁" t ack le " ▁is ▁a ▁vest ige ▁of ▁an ▁earlier ▁era ▁of ▁football ▁in ▁which ▁the ▁same ▁players ▁played ▁both ▁off ense ▁and ▁defense . ▁ ▁A ▁tack le ▁is ▁the