Of the twelve teams playing in MLB’s postseason, three have never won the whole enchilada. Of the three, the Padres have the most difficult path as they have to get through the Cubs and the Wildcard round before facing fellow 1969 expansion team, Milwaukee.
Of the three, only the Mariners have never appeared in a World Series. It would be interesting but probably not enough to move the national media, should the Mariners face the Jays, who were 1977 AL expansion teams