Executive Summary:
- Team controlled players contributed 36% of total wins from
1997-2006 and roughly 52% of wins from 2007-2015 indicated the increased value
of a successful farm system.
- Team-controlled position players and team-controlled pitchers
contribute roughly the same percentage of production.
- The top twenty-five team-controlled pitchers produced 60% of
total production and the top twenty-five team controlled position players
produced 50% of total production.
- Baseball America successfully identified fewer top ten
team-controlled position players and team-controlled position players ranked 26th
to 50th than they have in the past.
- Ranked team-controlled position
players produced 72% of production from 1997 to 2005 but only 61% from 2006 to
2015.
- Baseball America has volatile results when predicting pitching performance. They were especially successful from 2008-2011 but have largely failed to maintain that success.
There have been a
number of
articles over the
years attempting to determine the value of
ranked prospects. These articles, with the exception of my own, have largely followed the same
methodology: determine how much production prospects ranked for given years at a given spot produced over
six years. My work at
Camden Depot on the subject differs because I determine the actual time that each prospect is under team
control and use actual salaries instead of approximated salaries for each
prospect.
The major problem with these methodologies is that it requires
most players ranked in a given year to have completed their team controlled
years so that their performance can be assessed. This means that it doesn’t
allow the audience to determine an idea of prospects’ current worth, but rather
only a retrospective view. It’s helpful to know how prospects performed in the
mid-2000s, but it would be far better to know how they performed in 2015.
Therefore, instead of judging prospects by when they were
ranked, I decided to determine how much production team controlled players have
provided in each year from 1996 to 2014 provided that they were still under
team control. A prospect that was ranked #8 in 2011 and didn’t make it to the
majors until the middle of 2013 would have his 2013 contributions calculated in
2013 and his 2014 contributions calculated in 2014. In 2020, when he used up
his six years of service time, his contributions would not count towards this
ranking because he would no longer be a team-controlled player even if he
signed an extension. This allows the reader a more current view.
I use RA9_WAR to determine production, Lew Pollis’
documentation of the value of a win while valuing a 2014 win at $7.5M and a 2015 win at $8M,
determine actual salaries via
Cot’s and the
Lehman Database and determine service time also via
Cots where available and by my own algorithms and Baseball Reference when not
available.
The chart below shows how much production that ranked and
unranked position and pitching prospects contributed each year from 1997 to
2015. While ranked position players have contributed the most production, the
graph is reasonably volatile. There was a period from 2008 to 2011 where ranked
pitching prospects were at their peak value. Before that, from 2003 to 2006,
ranked pitching prospects produced less value than usual. Meanwhile, unranked
position prospects did well in 2014 and 2015 and poorly in 2003 and 2004. All in all, ranked position team-controlled
players have contributed the most value, followed by ranked pitchers, unranked
position players and unranked pitchers as one would have expected.
This next graph shows how much production team controlled
players have produced when ranked, unranked and total by both year and whether
they’re position players or pitchers. This graph measures production as a
percent and divides the production produced by players in a given category by
either all pitchers or position players.
The first thing that is that team controlled position and
pitching players have produced a similar percentage of total pitching and
position production. One problem when measuring pitching and position
production is that position players can earn 570 WAR in a year while pitchers
can only earn 430 WAR. This makes sense because position players catch pitches
and therefore can frame them as well as field balls put into play, but it does
mean that comparing position and pitching production can be like comparing
apples and oranges.
The second thing is that team controlled players, both
pitching and position, have become more valuable over time. From 1998-2006,
team controlled players produced only 36% of total production while from
2007-2015, they’ve produced over 50% of total production. It has certainly
become more important for teams to be able to successfully develop their top
talent due to the value that younger, team controlled players provide.
This next graph shows the production that ranked players
have provided divided by total production for both pitchers and position
players by year. This graph shows that ranked position players aren’t producing
as much value as they once did. For whatever reason, Baseball America seems to
be doing a worse job adequately grading position players than they have done
previously. It also shows that Baseball America has periods where they
accurately grade pitching prospects and where they do less well.
The margin of error appears to be small for Baseball America
and this is because most production is produced by a few top players. On
average, the top ten team-controlled pitchers contribute 30.4% of total
production while the next fifteen contributes another 30.6%. Team controlled pitchers ranked below 100
contribute -37.9% of total production due to being primarily below replacement
level. It should come as no surprise that the Gini coefficient for
team-controlled pitchers is .911.
As a result, team controlled ranked pitchers were extremely
successful in 2008-2011 because on average they successfully ranked 8 of the
top 10 team-controlled pitching prospects instead of the average 6. They only
hit on seven of the top ten in 2008, but they also ranked the top five in that
year. In 2011, they only missed on the #4, #6 and #10 pitching prospect and
this also inflated their results. The
chart below shows the percent of pitchers ranked whose production was ranked
between 1-10, 11-25 and 26-50.
Likewise, the top ten team controlled position players
contributed 25.2% of total production while the next fifteen contributed 26%.
Team controlled position players ranked below 100 contributed -18% of
production due to being below replacement level. The Gini coefficient is
slightly smaller for team-controlled position players, but still high at .871.
As a result, Baseball Americas numbers look considerably
worse because they were only able to rank 5 of the top 10 position prospects in
2014 and 2015 compared to their average of between 7 and 9. It doesn’t help
that they’ve also been unable to rank more than 50% of position players that produced
between the 26th and 50th total WAR for position players.
To sum up, team controlled players are becoming more
valuable now than they have been in the past. They contributed 36% of total
wins from 1997-2006 and roughly 52% of wins from 2007-2015. This indicates that
youth is becoming more important.
Pitchers contribute only 430 WAR per season while position
players contribute 570 WAR per season. Therefore, in absolute terms, team-controlled
position players contribute more production than team-controlled pitchers.
However, in relative terms, team-controlled position players and pitchers
contribute roughly the same percentage of production, indicating that it’s
important to develop both position players and pitching.
Relatively few team-controlled players contribute the vast
majority of total team controlled production. The top ten team-controlled
pitchers produced 30% of total production and the next fifteen produced another
30%. The top twenty five position players produced half of total production.
Baseball America isn’t doing as effective of a job ranking
position players. They’ve predicted fewer top ten position players in recent
years and have done a poor job ranking position players ranked 25th
through 50th over the past two years. As a result, ranked
team-controlled position players produced 72% of total production from
1997-2005 and only 61% from 2006-2015. They only produced roughly 50% in
2014-2015.
Baseball America’s performance is very volatile when it
comes to pitching prospects. They were successful ranking pitching prospects
from 2000-2003 and 2008-2011 and less successful during other periods. This is
because missing on a few top pitching prospects can have drastic impacts. It isn’t
clear whether Baseball America has gotten worse at predicting pitcher
performance.
It seems that baseball prospects are becoming more and more valuable as players are expected to be productive at younger ages. This makes publications like Baseball America more important and means that reliable rankings are important to adequately assess the status of baseball teams.