For this team, I'm not so sure about that. What would you have put the Cubs odds of winning the World Series at going into the season, and how does that compare to the odds of winning 3 straight games against another championship-caliber team? Probably fairly close. But at least I've locked in league championship and getting to see my team in the World Series. 538 has the Cubs as a 15% chance to win the Series now. For comparison's sake, Fangraphs had the Cubs at 17.4% before they played a game this year. The Dodgers were the only other team above 10%.