At playoff time last year, with the Cubs being favored to win the 2016 Fall Classic, I wrote a post
explaining why you shouldn't bet all your money on them. The logic is simple: There are 10 playoff teams, eight of which get past the wildcard game and into a League Division Series. If all teams were equally matched, they would each have a 1 in 8 (or 12.5%) chance of winning the World Series. But the teams are not completely equally matched.