5 pitchers who could swing pennant races

Brett Anderson's return from injury bolsters an already strong A's starting rotation. Jason Miller/Getty Images

Starting pitching is what got division leaders to where they are now and it is what many believe will decide the four wild-card berths. Just look at the teams vying for those slots and the pitchers they boast: the Tampa Bay Rays are led by David Price and James Shields, the Los Angeles Angels by Jered Weaver and Zack Greinke, the Detroit Tigers by Justin Verlander and Max Scherzer, and the Philadelphia Phillies by Roy Halladay, Cole Hamels and Cliff Lee.

The thing is, it's not always the aces who make the difference down the stretch. For example, in 2011, we saw Doug Fister take charge for the Tigers, posting a 0.53 ERA in September while helping them win the AL Central.

Here are five starters who aren't household names but could be this year's version of Fister and step to the forefront down the stretch: