January 2006
Beginner
467 pages
14h 21m
English
Content preview from Baseball HacksBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.
Measure Base Running Through EqBR
Measure base running proficiency through equivalent batter runs or extra base running percentage (XBRpct).
Twenty years ago, Bill James devised a set of formulas for measuring batting speed using readily available statistics. If you’re curious, here are the formulas:
- SpS1: speed score based on SB percentage
SpS1 = ((SB + 3) / (SB + CS + 7) - 0.4) * 20
- SpS2: speed score based on SB attempts
SpS2 = SQRT ((SB + CS) / ((H - 2B - 3B - HR) + BB + HP)) / 0.07
- SpS3: speed score based on triples
SpS3 = 3B / (AB–HR - K) / 0.02 * 10
- SpS4: speed score based on runs per time on base
SpS4 = (( R- HR) / (H + BB–HR - HP) - 0.1) / 0.04
- SpS5: speed score based on GDPs
SpS5 = (0.055–GDP / (AB–HR - K)) / 0.005
- Net speed score
Average of top four speed scores in the list
These measurements are useful, but they don’t take individual situations into account. For example, let’s consider SpS5. On average, a slow runner who follows a batter with a high on-base percentage will hit into fewer double plays than a similar runner who follows a batter with a high on-base percentage.
The Baseball America 2005 Prospect Handbook (Baseball America) has a great essay by James Click on a method for measuring base running. Aside from steals (successful and failed), good statistics aren’t available for measuring how well players run around the bases. In this hack, I explain quickly how to measure this statistic from the play-by-play data.
Equivalent Batter Runs
Click’s measurements are nice because they ...
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Read now
Unlock full access
More than 5,000 organizations count on O’Reilly
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.