I’ve made an interactive visualization tool for earned run average (ERA) and fielding independent pitching (FIP) across Major League Baseball. You’ve seen this visualization before in many of Owen Watson’s articles throughout last season. Owen used this to suggest which pitching staffs might have overachieved their peripheral stats. This visualization lets us see the discrepancies between ERA and FIP among all of the MLB teams or even among different players.

Below is an example of a graph are you able to create with the tool:

You can toggle between teams and players. Players are organized by team and you are able to set the minimum number of innings pitched for the player to be on the graph. There are two places you’ll see these graphs. The primary location will be the tool’s page on FanGraphs; this is where the full tool is available. Then the graph itself can be embedded into our blog (plus Community Research) or anyone else’s blog using an iframe element.

For comparing players who are on different teams, there is also a feature to create a graph of custom players within the same year. Below is an ERA-FIP comparison of the 2015 NL Cy Young race. Zack Greinke had the largest discrepancy between his ERA and FIP, Jake Arrieta’s difference wasn’t quite as large, while Clayton Kershaw had the reverse of Greinke and Arrieta, where his FIP was lower than his ERA.

We are in the process of developing more interactive visualization tools, including this one. If you find any bugs or have a feature you’d like to see, please let us know.