MLB Power Rankings: Cardinals and Royals rivalry expands to top of the rankingsByKyle Franzoni|Share on FacebookShare on XCopy ArticleShare on FacebookShare on XShare on RedditCopy ArticlePrev2 of 7NextMay 11, 2015; Los Angeles, CA, USA; Los Angeles Dodgers starter Zack Greinke (21) delivers a pitch against the Miami Marlins at Dodger Stadium. Mandatory Credit: Kirby Lee-USA TODAY SportsNext: 6-10: The Nationals are finally making their statementNextHome/Kansas City Royals
