▁line - outs . ▁ ▁Second ▁row ▁The ▁second ▁row ▁consists ▁of ▁two ▁lo cks ▁or ▁lock ▁for wards . ▁Lock s ▁are ▁usually ▁the ▁tall est ▁players ▁in ▁the ▁team , ▁and ▁special ise ▁as ▁line - out ▁jump ers . ▁The ▁main ▁role ▁of ▁the ▁lock ▁in ▁line - outs ▁is ▁to ▁make ▁a ▁standing ▁jump , ▁often ▁supported ▁by ▁the ▁other ▁for wards , ▁to ▁either ▁collect ▁the ▁thrown ▁ball ▁or ▁ensure ▁the ▁ball ▁comes ▁down ▁on ▁their ▁side . ▁Lock s ▁also ▁have ▁an ▁important ▁role ▁in ▁the ▁sc rum , ▁binding ▁directly ▁behind ▁the ▁three ▁front ▁row ▁players ▁and ▁providing ▁forward ▁drive . ▁ ▁Back ▁row ▁The ▁back ▁row , ▁not ▁to ▁be ▁confused ▁with ▁‘ Back s ’ , ▁is ▁the ▁third ▁and ▁final ▁row ▁of ▁the ▁forward ▁positions , ▁who ▁are ▁often ▁referred ▁to ▁as ▁the ▁loose ▁for wards . ▁The ▁three ▁positions ▁in ▁the ▁back ▁row ▁are ▁the ▁two ▁fl ank ers ▁and ▁the ▁number ▁ 8 . ▁The ▁two ▁fl ank er ▁positions ▁called ▁the ▁blind side ▁fl ank er ▁and ▁opens ide ▁fl ank er , ▁are ▁the ▁final ▁row ▁in ▁the ▁sc rum . ▁They ▁are ▁usually ▁the ▁most ▁mobile ▁for wards ▁in ▁the ▁game . ▁Their ▁main ▁role ▁is ▁to ▁win ▁possession ▁through ▁' turn ▁o vers '. ▁The ▁number ▁ 8 ▁pack s ▁down ▁between ▁the ▁two ▁lo cks ▁at ▁the ▁back ▁of ▁the ▁sc rum . ▁The ▁role ▁of ▁the ▁number ▁ 8 ▁in ▁the ▁sc rum ▁is ▁to