angers ▁have ▁both ▁lost ▁two ▁World ▁Series ; ▁the ▁remaining ▁teams ▁have ▁all ▁lost ▁one ▁Series . ▁ ▁As ▁of ▁ 2 0 1 9 , ▁every ▁team ▁that ▁has ▁appeared ▁in ▁at ▁least ▁three ▁World ▁Series ▁has ▁won ▁at ▁least ▁one ▁title . ▁ ▁Only ▁one ▁team ▁has ▁never ▁played ▁in ▁the ▁World ▁Series : ▁the ▁American ▁League ' s ▁Seattle ▁Mar in ers . ▁The ▁Mar in ers ▁have ▁competed ▁in ▁a ▁League ▁Championship ▁Series ▁three ▁times . ▁ ▁The ▁Boston ▁Red ▁So x ▁have ▁the ▁most ▁World ▁Series ▁titles ▁before ▁their ▁first ▁World ▁Series ▁loss , ▁winning ▁the ▁championship ▁in ▁their ▁first ▁five ▁appearances — 1 9 0 3 , ▁ 1 9 1 2 , ▁ 1 9 1 5 , ▁ 1 9 1 6 , ▁and ▁ 1 9 1 8 — before ▁losing ▁the ▁next ▁series ▁they ▁played , ▁in ▁ 1 9 4 6 . ▁ ▁The ▁American ▁League ' s ▁Toronto ▁Blue ▁J ays ▁( 1 9 9 2 ▁and ▁ 1 9 9 3 ) ▁and ▁National ▁League ' s ▁Miami ▁Mar l ins ▁( 1 9 9 7 ▁and ▁ 2 0 0 3 ▁as ▁the ▁Florida ▁Mar l ins ) ▁hold ▁the ▁record ▁for ▁most ▁appearances ▁without ▁ever ▁losing ▁a ▁Series . ▁ ▁Three ▁other ▁franch ises ▁have ▁won ▁their ▁l one ▁appearance : ▁the ▁National ▁League ' s ▁Arizona ▁Diam ond back s ▁( 2 0 0 1 ) ▁and ▁Washington ▁National s ▁( 2 0 1 9 ) ▁and