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June 26, 2002

Aim For The Head: More on Lengthy Plate Appearances

by Keith Woolner

Many people brought up the point that strikeouts can only kick in at three pitches, and walks at four pitches.

Aim For The Head: More on Lengthy Plate Appearances

by Keith Woolner

June 11, 2002

Premium Article Aim For The Head: OPS by Length of Plate Appearance

by Keith Woolner

Looking at which length of a plate appearance favors the hitter, the pitcher, or neither

Aim For The Head: OPS by Length of Plate Appearance

by Keith Woolner

June 6, 2002

Aim For The Head: PAP^3 FAQ

by Keith Woolner

PAP Q&A

June 5, 2002

Aim For The Head: PAP^3 FAQ

by Keith Woolner

May 29, 2002

Aim For The Head: Simulating Catcher's ERA

by Keith Woolner

May 22, 2002

Premium Article Prospectus Feature: Analyzing PAP (Part Two)

by Keith Woolner

Before claiming any success for any measure in predicting injury, we must fundamentally recognize that any PAP-style metric will be positively correlated with raw pitch counts. Pitchers with high pitch count totals will tend to have high PAP totals. If a PAP function provides no additional insight into which pitchers will be injured that pitch count totals alone, there is no reason to add the added complexity of a PAP system to our sabermetric arsenal.

Analyzing PAP (Part Two): The long-term injury risk of high pitch counts

by Keith Woolner

May 21, 2002

Premium Article Prospectus Feature: Analyzing PAP (Part One)

by Keith Woolner

There are two related effects we are interested in studying. The original intent of PAP was to ascertain whether a pitcher is at risk of injury or permanent reduction in effectiveness due to repeated overwork. And in particular, does PAP (or any similar formula) provide more insight into that risk that simple pitch counts alone?

Analyzing PAP (Part One): The immediate impact of high pitch counts on pitcher effectiveness

by Keith Woolner

May 7, 2002

Premium Article Aim For The Head: Batters' ball-in-play rates

by Keith Woolner

This week's question comes from Robert Shore, who asks: Like many people, I was mightily impressed by Voros McCracken's work, which strongly suggested that pitchers have essentially no effect on the conversion of balls in play to outs. It occurred to me to wonder about the converse question. Are some batters better than others in converting balls in play to base hits?

Aim For The Head: Batters' ball-in-play rates

by Keith Woolner

Starting today, we will be periodically running some of the best content from the new, super-charged Baseball Prospectus archives. Those new to BP may be reading this content for the first time. Long-time readers can rekindle old debates. We begin today with Keith Woolner's look at the conversion of balls in play into outs, from 2002. To do your own mining, go to BP's Search function. To request a specific article from the archives, e-mail jkeri@baseballprospectus.com.

May 3, 2002

Prospectus Feature: Aim for the Head: Dropping the Worst Starts

by Keith Woolner

There's some merit to the argument that a few starts can skew a pitcher's cumulative line, and there have been attempts, such as Michael Wolverton's Support-Neutral statistics to better model the maximum impact a single game can have on a pitcher's value.

Aim For The Head: Dropping the Worst Starts

by Keith Woolner

April 18, 2002

Prospectus Feature: Sensible Revenue Sharing: One Man's Plan

by Keith Woolner

One of the most complex and bedeviling problems in baseball today is understanding to what extent large-market teams have an competitive advantage over small-market teams.

Sensible Revenue Sharing: One Man's Plan

by Keith Woolner

April 1, 2002

Premium Article Aim For The Head: Innings Pitched to Wins

by Keith Woolner

This week's question comes from A.F., who writes: I recently found an article from last season by Joe Morgan that I don't quite understand...

Aim For The Head: Innings Pitched to Wins

by Keith Woolner

February 12, 2002

Aim For The Head: Set Lineups

by Keith Woolner

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