Dark cloud hovers over No. 1 Nats: MLB Power Rankings

Washington Nationals GM Mike Rizzo says the team will hold firm to its innings limitation for pitcher Stephen Strasburg, shutting him down for the playoffs. He's a big reason the Nats sit atop the NL East and the CBCSports.ca rankings.
Stephen Strasburg entered play Aug. 17 with a 13-5 record for 2012, but his chances to build on that win total may be limited as the team will not let him surpass the 180-inning mark this season. (Norm Hall/Getty Images)
Every second week, CBCSports.ca's Mike Dennis breaks down the balance of power in Major League Baseball.