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where $H$ is number of hits, $BB$ is number of walks, $HBP$ is hit by pitches, and $SF$ is sacrifice flies. Given this information, I now know what to look for in my offense and how to make the tough decision of who to choose from in a sample of excellent batters. Next up, I’ll need some pitchers who can keep the other team from scoring.  \paragraph{What Makes a Great Pitcher?}  A great pitcher can change an entire game single-handedly. They control the strikes and walks that occur. But once the batter makes contact with the ball, the rest of the defense is left up to the players in the field. We’re going to focus primarily on the pitcher, however. If the rest of the defense is playing at league average, we can use a metric known as the Fielding Independent Pitching.  \[FIP = \frac{13HR \frac{13\times HR  + 3BB 3\times BB  – 2K}{IP} + 2\times K}{IP} \plus  C\] The constant $C$ is to make the figure look more like the scale used for Earned Run Average (ERA). The $ERA$ is another formula used to show how many runs a pitcher lets allows in a given game.  \[ERA = 9\times\frac{ER}{IP}\]  The lower the averages of these two metrics, the less likely the other team is to score. So now to go and find some pitchers with excellent FIP and ERA scores.