▁the ▁American ▁League ' s ▁Los ▁Angeles ▁Ang els ▁( 2 0 0 2 ▁as ▁the ▁Ana heim ▁Ang els ). ▁ ▁The ▁Boston ▁Red ▁So x ▁have ▁the ▁longest ▁active ▁stre ak ▁of ▁World ▁Series ▁vict ories ▁( four ) ▁since ▁the ▁last ▁time ▁they ▁lost ▁a ▁series . ▁ ▁They ▁have ▁won ▁titles ▁in ▁ 2 0 0 4 , ▁ 2 0 0 7 , ▁ 2 0 1 3 ▁and ▁ 2 0 1 8 ▁after ▁their ▁last ▁loss ▁in ▁ 1 9 8 6 . ▁ ▁The ▁Pitts burgh ▁Pir ates , ▁San ▁Francisco ▁Gi ants , ▁and ▁C inc inn ati ▁Red s ▁have ▁the ▁longest ▁active ▁World ▁Series ▁wins ▁stre ak ▁by ▁National ▁League ▁teams , ▁with ▁each ▁team ▁having ▁won ▁ 3 ▁times ▁since ▁their ▁last ▁losses . ▁ ▁Since ▁their ▁last ▁defeat ▁in ▁ 1 9 2 7 , ▁the ▁Pir ates ▁have ▁won ▁the ▁Series ▁in ▁ 1 9 6 0 , ▁ 1 9 7 1 ▁and ▁ 1 9 7 9 . ▁ ▁After ▁their ▁loss ▁in ▁ 2 0 0 2 , ▁the ▁Gi ants ▁won ▁the ▁Series ▁in ▁ 2 0 1 0 , ▁ 2 0 1 2 , ▁and ▁ 2 0 1 4 . ▁ ▁Finally , ▁since ▁their ▁loss ▁in ▁ 1 9 7 2 , ▁the ▁Red s ▁have ▁won ▁the ▁Series ▁in ▁ 1 9 7 5 , ▁ 1 9 7 6 ▁and ▁ 1 9 9 0 . ▁ ▁The ▁Yan