For most of the last 150 years, baseball has never had to worry about a losing team in October. For so many years the "playoffs" were just the World Series between the best team from the AL and NL. Then they slowly expanded to include a Championship Series, then a Division Series, then a Wild Card Game.
Now, at least in this pandemic-shortened season, we have a Wild Card Round. The postseason has multiplied by eight from its original form, into an inclusive tournament involving more than half of MLB teams.
The lower the sport sets its postseason bar, the more likely it is a losing team crashes the party.