▁regular ▁season ▁win - loss ▁record . ▁If ▁both ▁league ▁champions ▁have ▁the ▁same ▁record , ▁the ▁tie - bre aker ▁is ▁head - to - head ▁record , ▁and ▁if ▁that ▁does ▁not ▁resolve ▁it , ▁the ▁second ▁tie - bre aker ▁is ▁best ▁divis ional ▁record . ▁ ▁The ▁Houston ▁Ast ros ▁won ▁the ▁ 2 0 1 7 ▁World ▁Series ▁in ▁ 7 ▁games ▁against ▁the ▁Los ▁Angeles ▁D od gers ▁on ▁November ▁ 1 , ▁ 2 0 1 7 , ▁winning ▁their ▁first ▁World ▁Series ▁since ▁their ▁creation ▁in ▁ 1 9 6 2 . ▁ ▁The ▁Boston ▁Red ▁So x ▁won ▁the ▁ 2 0 1 8 ▁World ▁Series , ▁defe ating ▁the ▁Los ▁Angeles ▁D od gers ▁in ▁ 5 ▁games ▁for ▁their ▁fourth ▁title ▁since ▁ 2 0 0 4 . ▁ ▁In ▁ 2 0 1 9 , ▁the ▁Washington ▁National s ▁defeated ▁the ▁Houston ▁Ast ros ▁in ▁seven ▁games . ▁It ▁was ▁the ▁first ▁seven - game ▁World ▁Series ▁in ▁which ▁the ▁road ▁team ▁won ▁every ▁game . ▁The ▁National s ▁achieved ▁a ▁couple ▁of ▁historical ▁mil est ones : ▁becoming ▁the ▁first ▁team ▁to ▁win ▁the ▁World ▁Series ▁without ▁winning ▁a ▁home ▁game and ▁bringing ▁the ▁title ▁back ▁to ▁the ▁capital ▁for ▁the ▁first ▁time ▁since ▁ 1 9 2 4 . ▁ ▁Modern ▁World ▁Series ▁appearances ▁by ▁franch ise ▁ ▁World ▁Series ▁record ▁by ▁team ▁or ▁franch ise , ▁ 1 9 0 3 – 2 0 1 9 ▁▁ ▁Notes