Some Statistics in Sports Papers

Baseball

In-Season Prediction of Batting Averages (Brown, 2008)

Pitch Framing

American Football

Finding Value in the NFL Draft

PFF WAR

Causal Inference

A good overview of causal inference

A good example of applying causal inference to sports

Sports Betting & Information Theory

Kelly Criterion & Log-Optimal Betting

Horse Race Betting

Shannon Entropy as a Measure of the Uncertainty of a Distribution (Shannon, 1948)