PITCHf/x

This section focuses on all things PITCHf/X

What caused Cliff Lee's renaissance in 2008?

8

Taking some old analysis from Mike Fast we can look at what made Cliff Lee's incredible improvement from 2007 to 2008 possible. Lee went from a nobody to the best pitcher in baseball, and we don't...

New Stat: Plate Discipline Rating

13

Introducing a new metric -- Disc Rating -- that puts all of the individual categories of plate discipline into one overall rating.

Toward umpire aging curves

3

Bryan Cole investigates whether umpires' ability to call balls and strikes gets worse with age.

Brain training could enhance plate discipline.

1

Recent research suggests that visual training games can improve the vision and on-field hitting performance of baseball players. What exactly was established in this research and are there players...

Crushed: Worst pitches of 2013

+

Identifying the worst pitches of 2013 and who threw them

The best and worst home run pitches of 2013

1

We look at which pitcher and pitch type pairings are the most ripe for a homer and least likely to leave the yard.

The art of the fastball, right down the middle

6

So often, we focus our attention on the best pitches and the most impressive swings. How about a little love for the BP fastball?

Alex Cobb Has Next

4

He doesn't get many headlines or accolades, but is Alex Cobb on his way to Cy Young buzz in 2014?

First and worst 2013: Split-finger/cut fastballs

1

The last of the series of best and worst pitches of 2013 using z-scores, we look at a pair of hybrid heaters.

Koji Uehara's second-half dominance

9

From July through the end of October, Red Sox closer Koji Uehara dazzled the American League, compiling a 0.58 FIP and a 0.313 WHIP. What changes did Uehara make over the course of 2013 that...

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