Category Archives: Math

Finding Undervalued Pitchers: SIERA and FIP

Yesterday we ran correlations between various pitching metrics and fantasy baseball profits for pitchers, and found that most of the ways we evaluate pitchers—like strikeouts and ERA—influence a pitcher’s cost so much that they don’t help us predict profits.

But we did discover (more…)

LINK: A lesson in variance, as much as anything.

Screenshot 2014-05-01 22.35.56The Hardball Times is running a series of articles by their writers about what they learned doing a project. Dan Szymborski wrote about projecting player performance and Mitchel Lichtman wrote about defensive statistics. Very good stuff.

A guy (more…)

Top 10 Most Misunderstood Fantasy Baseball Concepts: No. 1. The Salary Cap

Top 10 words over white background$260 per team. $3120 per league. These are the bedrock facts of Rotisserie baseball pricing.

The NL screwed things up for a while, when 16 teams (more…)

BASICS: How To Calculate Draft Inflation

A reader asked about this at Ask Rotoman today. The link gives you his question and the full answer. Here’re the basics:

In a keeper league (4×4 or 5×5 doesn’t matter), where inexpensive players are carried over from one year to the next, you need to adjust the startup (more…)