baseball and operations research
TRANSCRIPT
MoneyBall
Why was Cinderella a poor baseball player?
Time Line of Events
The books chronological order is displayed.
Time Line Cont.
Bill James“When numbers acquire
the power of language they can become
anything language can become.”....“It is victory and defeat, which is all the idiot subconscious really understands.”Bill James 1978
The passionate spirit of questioning baseball statistics starts a movement and a small following of a diverse crowd which is key to the future.
1978 1980 1983 1990 1993 1994 1995 1997 1998 1999 2000 2001 2002 2003
Bill James Baseball Abstract
Bill James Methodology
Team P Win Lost A Win Loss
St. Louis 110-44 105-49
Pittsburgh 87-67 90-63
Cincinnati 81-73 89-65
Chicago 81-73 75-79
New York 66-88 67-87
Boston 68-86 65-89
Brooklyn 60-94 63-91
Philadelphia 63-91 61-92
P = Projected
A = Actual
Pct win * 154 Games/Season gives you projected.
A toolset is created to look at the performance of players so you can make decisions about them, like value and performance.
1978 1980 1983 1990 1993 1994 1995 1997 1998 1999 2000 2001 2002 2003
Bill James Baseball Abstract
Walter Haas Jr.Oakland
Athletics
Haas was the owner of the Oakland Athletics baseball club, acquiring the team from Charles O. Finley in August 1980 for less than $13 million.
Walter was a philanthropist who wanted to please Oakland by spending money.
1978 1980 1983 1990 1993 1994 1995 1997 1998 1999 2000 2001 2002 2003
New Owner Walter Haas A’s Late
LLCNow Known As STATS LLC
Started off collecting data not otherwise collected.
Now offers analytical tools.
1980
The following of Bill James led to the development of the founding of STATS Incwhich collected new data.
1978 1980 1983 1990 1993 1994 1995 1997 1998 1999 2000 2001 2002 2003
Cranmer Founds Stats Inc
Sandy Alderson
• Became GM for A’s
1983
• Now GM for the Mets
• Marine Corps discipline
• Discovered Bill James
The culture of change is starting to begin but all the players need to be in the right place and time.
1978 1980 1983 1990 1993 1994 1995 1997 1998 1999 2000 2001 2002 2003
Sandy Alderson becomes GM, A’s
Billy Beane
Began Playing for the Mets in 1983
Story of winning…
Retired in 1990 from Oakland
Billy Beane Lost His wife, but never his ferocious need to win, he just transferred it from playing to making decisions about players.
1978 1980 1983 1990 1993 1994 1995 1997 1998 1999 2000 2001 2002 2003
Billy Beane playing for Mets: Billy Beane becomes A’s scout
Billy Beane
Becomes Asst: GM to Sandy Alderson in 1993 for Oakland
1990-1993 Time frame. “His job was to go out and find undervalued minor league players.” Alderson 1993
1978 1980 1983 1990 1993 1994 1995 1997 1998 1999 2000 2001 2002 2003
Billy Beane becomes Asst. GM A’s
AVM Systems
Ken Mauriello and Jack Armbruster found AVM Systems 1994
“Looking at the places where stats don't tell the whole truth- or even lie about the situation”
Came up with a whole new method of recording data one step further than STATS Inc.
1978 1980 1983 1990 1993 1994 1995 1997 1998 1999 2000 2001 2002 2003
Mauriello and Armbruster found AVM Systems
Owner Walter Haas Dies
Steve Schott and Ken Hofmann become new owners.
Ownership of the Oakland Athletics
In 1995, he and partner Ken Hofmann purchased the Oakland Athletics from the Walter A. Haas, Jr. estate. Under their patronage, general manager Billy Beane's novel management
The new owners are going to run the A’s like a business and not a charity. Next piece is in place for change.
1978 1980 1983 1990 1993 1994 1995 1997 1998 1999 2000 2001 2002 2003
Owner Walter Haas Dies
Manager Changes 1995
Tony LaRussa Out Art Howe In
GM Alderson has successfully implemented a disciplined hitting system in the farming system that will now be implemented in the majors by Art Howe.
1978 1980 1983 1990 1993 1994 1995 1997 1998 1999 2000 2001 2002 2003
LaRussa Leaves, Art Howe hired to represent front office
Alderson hitting Theory
• Minor Leagues
• On base percentage
• More Walks
1978 1980 1983 1990 1993 1994 1995 1997 1998 1999 2000 2001 2002 2003
Now there is a disciplined hitting system in the minor leagues where Billy Beane can farm from players who are undervalued.
Alderson implemented his hitting theory
Crucial Change
Billy Beane GM for Oakland A's 1997
Filling the shoes
Billy is a great GM because he’s been a ball player and won’t be intimidated by other ball players, and can foster change. Doesn’t watch the games.
1978 1980 1983 1990 1993 1994 1995 1997 1998 1999 2000 2001 2002 2003
Billy Beane becomes GM Oakland A’s
Paul DePodesta
• Degree in Economics
• Passion for baseball
• Hired by Billy Beane from
Cleveland Indians 1998
• Hires AVM Systems
Now all the pieces are place to start making real change in the way players are drafted and decided upon, which all traces back to Bill James
1978 1980 1983 1990 1993 1994 1995 1997 1998 1999 2000 2001 2002 2003
Billy Beane hires Paul DePodesta from Cleveland
STATs Inc Sold!
To Fox News Corp for 45M 1999
Now Known as STATS LLC,
Partially owned by Associated Press today
On the side, today STATS LLC is still used and provides value for decision making. Recently seen used taking data for basketball NCAA.
1978 1980 1983 1990 1993 1994 1995 1997 1998 1999 2000 2001 2002 2003
Stats Inc Sold to Fox News Corp 45 M
John William Henry II
Buys Florida Marlins 1999
Fantasy League
Reality Check
Now Owner of Boston
Could not implement real change because he did not have all the pieces set up for change. Avid Bill James follower.
1978 1980 1983 1990 1993 1994 1995 1997 1998 1999 2000 2001 2002 2003
John Henry buys Florida Marlins
Results after 2 years of BB GMOakland Wins 87 Games! 1999
After 3 years- Oakland wins 91 Games and makes playoffs – 2000
After 4 years – Oakland wins 102 Games and makes playoffs – 2001
After 5 years – Oakland wins 103 Games and makes playoffs – 2002 20 game win record
After 6 years – Oakland wins 91 Games and makes the playoffs – 2003
The fruits of all the labor and discipline speaks for itself without even entire team buy in.
1978 1980 1983 1990 1993 1994 1995 1997 1998 1999 2000 2001 2002 2003
Oakland Fires AVM Systems in 2000, results are shown
Time Line Final
2003 to 2006 slump
2006 made playoffs and to 2012 slump
Made playoffs in 2012,2013,2014
There must be entire team buy in for the system to work. They are rebuilding again. Oakland makes stars.
1978 1980 1983 1990 1993 1994 1995 1997 1998 1999 2000 2001 2002 2003
Oakland made playoffs
Conclusion
This system took 25 years to implement from Bill James analysis to Billy Beane as GM to see results in MLB.
The spirit of Bill James is what runs the Front Office of the Oakland A’s, how to improve constantly.
The spirit of Bill James led Billy Beane and Paul Depodesta to create an objective value system of players. (Win Shares extra slides)
This value system is used to make objective decisions about the players and what they are worth.
Thoughts
If this group obtains military data of any kind, we can do an analysis for it using our tools.
Military battles
Systems
Predictive Analysis
All we need is data and we can simulate anything. Show me the data!
Defense
Ken Mauriello and Jack Armbruster
Stock Market Like baseball had big data.
Calculate the value of stocks
Quantitative Analysis
Applied the same analysis to baseball.
“Looking at the places where stats don't tell the whole truth-or even lie about the situation”
Defense
AVM Systems 1994
– Redefining Baseball Statistics
New Method of data collection
– What is a double?
Hired by Paul Depodesta
Copied their methods of data collection
Used runs as a metric
Bill James
“I’d probably be a writer if there was no such thing as baseball, but since there is I can’t imagine writing about anything else.”
Developed a series of equations that fit the data in spare time. STATS Inc.
Bill James taught Beane the value of scoring runs/based his system off of this.
Bill James Historical Baseball Abstract 1978-2003 revised
Motivation “Adapt or die” (Movie, Gov Parallel)
Decision Making
With Defensive values used to rate players, you could decide why you should or should not pay a player more or less for defense, which was overpaid by millions.
Broke a player into their individual statistics like walks, singles, doubles, homeruns, pitches per plate appearance, and decided according to their budget, which single stat they could replace.
Methodology
Bill would take historical data and create a model to explain it.
Win Loss Prediction
Value System breakthrough for each individual player developed
Developed something called win shares
Goal, reduce analysis to one simple number which opens a plethora of other questions. DATA EXISTS!
Flavor of Bills method -1944
Team R OR Won-Lost
St. Louis 772 490 105-49
Pittsburgh 744 662 90-63
Cincinnati 573 537 89-65
Chicago 702 669 75-79
New York 682 773 67-87
Boston 593 674 65-89
Brooklyn 690 832 63-91
Philadelphia 539 658 61-92
154 Game Season
League Avg R 662
Marginal runs scored Avg 331
A Marginal Run is defined as any run scored by the team in excess of one-half the league average, or any run prevented (not allowed) by the team below the level of 1.5 times the league average.
Marginal Runs
Team MR
St. Louis 441
Pittsburgh 413
Cincinnati 242
Chicago 371
New York 351
Boston 262
Brooklyn 359
Philadelphia 208
Team MR MRS
St. Louis 441 503
Pittsburgh 413 331
Cincinnati 242 456
Chicago 371 324
New York 351 220
Boston 262 319
Brooklyn 359 161
Philadelphia 208 335
662 + 331 = 993993 – 490 = 503: For all rows
Continued Method
Project each teams winning by dividing the total by twice the league average of runs scored – 1324
Team MR MRS Total Pct
St. Louis 441 503 944 .713
Pittsburgh 413 331 744 .562
Cincinnati 242 456 698 .527
Chicago 371 324 695 .525
New York 351 220 571 .431
Boston 262 319 581 .439
Brooklyn 359 161 520 .393
Philadelphia 208 335 543 .410
The Subjective Element
1. Statistically undocumented portions of career
2. Inequality in competition
3. World Series Performance
4. Positive or Negative leadership
5.Clutch Performance
6. Special contributions
7. Defensive Value beyond win shares
The Approximate
Ballpark factor
So why is this a good method for figuring out win loss for a team during their season?
The offensive and defensive value of each player can be determined through win shares!
This leads to valuing the players.
Path Forward
What is it we are studying?
What should we model?
If there are problems with the modeled soldier, lets model our own soldier from the ground up.
Form questions
Answer questions with data.
Start playing with the data.