To the average baseball fan, the earned run average, or ERA, is the best way to determine how effective a pitcher is.
That is not always the case. Just like in the movie Moneyball, teams must find value in players that might not have the ERA or wins and losses. When looking at a pitcher, there are quite a few other numbers that must be looked at.
For instance, the walks plus hits per innings pitched (WHIP), the ground ball to fly ball ratio (G/F) and strikeouts per nine innings (K/9) are just a few of the stats that teams use to find diamonds in the rough.
Not every team has an ace like Justin Verlander or Roy Halladay, but there are some pitchers who preform well outside of their listed ERA.
*Compared pitchers within there own respective leagues
**The idea being that these pitchers would be useful but for their ERA