Analyzing Baseball Data with R

10Exploring Streaky Performances

Contents

1. 10.1 Introduction
2. 10.2 The Great Streak
   1. 10.2.1 Finding game hitting streaks
   2. 10.2.2 Moving batting averages
3. 10.3 Streaks in Individual At-Bats
   1. 10.3.1 Streaks of hits and outs
   2. 10.3.2 Moving batting averages
   3. 10.3.3 Finding hitting slumps for all players
   4. 10.3.4 Were Suzuki and Ibanez unusually streaky?
4. 10.4 Local Patterns of Weighted On-Base Average
5. 10.5 Further Reading
6. 10.6 Exercises

10.1 Introduction

Some of the most interesting phenomena in baseball are streaky or hot/cold performances by hitters and pitchers. During particular periods in the season, a particular player will hit for a high batting average, and in other periods, the player will be in a "cold streak" and all batted balls appear to be fielded for ...