Atlanta Braves Discussion: Julio Teheran Defying Norms

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Sep 26, 2015; Miami, FL, USA; Atlanta Braves pitching coach Roger McDowell (left) talks with starting pitcher Julio Teheran (right) on the pitchers mound during the fifth inning against the Miami Marlins at Marlins Park. Mandatory Credit: Steve Mitchell-USA TODAY Sports /

There’s been much debate on Atlanta Braves Julio Teheran…

…concerning his split between ERA and FIP/xFIP. First and foremost, if you’re not aware of the metrics I’m going to discuss in today’s article, here is an explanation of both FIP and xFIP by Fangraphs:

"“Fielding Independent Pitching (FIP) measures what a player’s ERA would look like over a given period of time if the pitcher were to have experienced league average results on balls in play and league average timing.”"

Here’s the method of calculating FIP:

And xFIP:

"Expected Fielding Independent Pitching (xFIP) is a regressed version of Fielding Independent Pitching (FIP), developed by Dave Studeman from The Hardball Times. It’s calculated in the same way as FIP, except it replaces a pitcher’s home run total with an estimate of how many home runs they should have allowed given the number of fly balls they surrendered while assuming a league average home run to fly ball percentage (between 9 and 10% depending on the year)."

xFIP Flash Card 12-29-15 /

Next: How does Julio do it?

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