So sadly baseball is not what it used to be. We can no longer rely on Runs Bated In (RBI), or even Home Runs (HR) to see how effective a batter is, and we cannot simply use Earn Run Average(ERA) and Strikeouts(K) to judge how good a pitcher is. You see, around 1977, this guy named Bill James wrote a book call Bill James’ Baseball Abstract”, and it changed everything. Over the first few years the book was out, it became increasingly popular with scout and GM. It was a lot easier for them to analysis a players stats so they could quickly determine whether or not they could make it in the big leagues. With the creation of calculations such as BABIP (Batting average on balls in play), ISO(Isolated Power), and OPS(On base percentage + Slugging
