MLB Power Rankings: Surging Marlins, Plummeting Pirates, and Blue Jays, Plus a New Number One

There is a new number one team in our weekly MLB power rankings for the first time in eight weeks after the Atlanta Braves went 1-4 against the Chicago White Sox and New York Mets last week.

The White Sox continue to be one of the biggest early surprises of the season, and they are joined by a red-hot Miami Marlins team and an upstart Washington Nationals club as unexpected teams inside the top 10 in this week's rankings.

The league is becoming increasingly segmented into clear-cut contenders, fringe teams on the right side of contention, fringe teams on the wrong side of contention, and afterthoughts, and those lines will become even more defined in the coming weeks.

The Marlins have the best record in baseball since the start of June, going 10-2 in their last 12 games to get back to .500 on the year.

The Dodgers lead the majors in run differential, OPS, and starting pitching ERA, giving them a strong case for the most well-rounded team in baseball.