Sliding Rangers hold on to top spot while Pirates not what they seem

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The Philadelphia Phillies, National League East champions for each of the past five seasons, are now eight games out of first place after winning just one of their past nine games. While the Phillies struggle, their Pennsylvania brethren in Pittsburgh are tied for the lead in the NL Central. However, the Pirates' continuing offensive difficulties make this likely to be a short lived affair, and our rankings suggest that the Phillies are still the best team in the state, even if they're not playing like it at the moment.

NOTE: All stats are through Sunday, June 10.

Rankings written by the Ben Duronio of Fangraphs. The system used to rank the teams is based not on the current standings or a gut feeling about team quality, but on how well they've performed at the underlying traits that predict future performance better than wins and losses.

wRC+ is an offensive index where 100 is league average and every point above or below that denotes how far from league average a player's performance has been up to that point. It is adjusted for park and league, so it takes into account the context of a player's surroundings, and allows for comparison of performance from players in different situations and in different times.

MLB Power Rankings