Where some things seemed certain just a few short weeks ago, suddenly every team's perch in the rankings might seem a little bit more precarious. The Tampa Bay Rays just swept the Boston Red Sox to put big dent in Boston's bid to break the single-season team record for wins. And just like that, Boston is no longer our unanimous No. 1, getting four of five votes. We have tight races in both West divisions, the Yankees' perch atop the American League wild-card standings suddenly doesn't seem so secure, and the National League wild-card picture has at least five worthy challengers.
Power Rankings: Which team could break into MLB's top trio?
