# Sabermetrics 101

An Introduction to Sabermetric Theory

## Small Sample Sizes and Player Defense: OAA Might Just Be Okay

The game is evolving, and a longstanding trope of sabermetrics is beginning to fall

## An Idiot’s Guide to Advanced Statistics: FIP > ERA

Simple but important.

## An Idiot’s Guide to Advanced Statistics: wOBA and wRC+

These two stats are at the core of much of our hitting analysis here at LL, but how do they work?

## What stats to pay attention to during Spring Training

Spring training stats don’t matter, until they do.

## An Idiot’s Guide to Advanced Statistics: The Basics - WPA and WAR

I’m here to learn y’all some things, real simple-like.

## The Season's Over. Let's POWER RANK Office Formats

Improve your day-to-day life, because the Mariners aren't going to make you happy.

## LL year in review: The new era begins

The games stopped, Jerry Dipoto got hired, and we all got down to waiting.

## WPA and those charts we use

Ever wondered what the charts are that we post after most games? Here you go.

## FAME and the Mariners

A theoretically fun, pragmatically useless new statistic that measures not how good a player was, but how good people thought they were.

## Sabermetrics 101: Wrap-Up (And Announcement!)

Sabermetrics 101: Wrapping up the series.

## Sabermetrics 101: Fielding

Sabermetrics 101: Fielding

## Sabermetrics 101: Batting

Sabermetrics 101: Batting

## Sabermetrics 101: Pitching

Sabermetrics 101: Pitching and the Evaluation Thereof

## Sabermetrics 101: Data

Sabermetrics 101: Data

## Sabermetrics 101: WPA and Leverage Index

Sabermetrics 101: WPA and Leverage Index

## Sabermetrics 101: Splits

Sabermetrics 101: Splits

## Sabermetrics 101: Sample Sizes

Sabermetrics 101: Sample Sizes

## Sabermetrics 101: Aging Curves

Sabermetrics 101: Aging Curves

## Sabermetrics 101: League Equivalencies

Sabermetrics 101: League Equivalencies

## Sabermetrics 101: Park Factors

Sabermetrics 101: Park Factors

## Sabermetrics 101: The Isolation Problem

Sabermetrics 101: The Isolation Problem. Why we separate a player's performance from his teammates, and when.

## Sabermetrics 101: Replacement Level

Sabermetrics 101: Replacement Level

## Sabermetrics 101: Financial and Roster Constraints

Sabermetrics 101: Financial and Roster Constraints.

## Sabermetrics 101: Rate vs. Counting Stats

Sabremetrics 101: Rate vs. Counting Stats

## Sabermetrics 101: BaseRuns

Sabremetrics 101: Baseruns. How do we derive a more accurate run estimator?

## Sabermetrics 101: Linear Weights

Sabermetrics 101: Linear Weights. Converting events on the baseball field to runs.

## Sabermetrics 101: A Win is A Win is 10 Runs (Or Thereabouts)

Sabremetrics 101: A Win is A Win is 10 Runs (Or Thereabouts). But how did we get there?

## Sabermetrics 101: Expected Wins and Losses

Sabermetrics 101: Expected Wins and Losses. Pythagorean Theory Explained.

## Sabermetrics 101: Environment

Sabremetrics 101: Environment. Why do we need park and league factors?

## Sabermetrics 101: Correlation

Sabremetrics 101: Correlation. What does it mean, and how do we use it?

## Sabermetrics 101: Value and Wins

Sabermetrics 101: Value and Wins