The National
Football League Draft is an annual event that takes place at the end of
April and was watched on ESPN by over seven million viewers in 2010.
Once the draft is completed, the analysis begins as to which teams won
or lost the draft and which players will have the biggest impact with
their new team for the upcoming season. In terms of fantasy analysis,
rookie players are amongst the hardest to analyze because all we have
are college statistics which are often flawed by the varying quality of
opponents, the system of play or the talent surrounding the players. I
was curious to find out whether rookie players were overrated or
underrated by the average manager in fantasy drafts. In this article, I
will compare the average draft position for rookie running backs with
their ranking in fantasy points (in a points per reception scoring
system) to try and determine whether or not rookie running backs are
worth drafting.
For this analysis I
decided to look at running backs drafted in the first four rounds of the
NFL Draft since the year 2000. To be part of this analysis, the running
backs had to have been drafted in at least 5% of fantasy drafts
according to data from
myfantasyleague.com and had to play in at least one NFL game in
their rookie season. This left us with 74 rookie running backs to
analyze. As mentioned in my introduction, in order to determine if
rookie running backs are generally overrated or underrated, I am
comparing their ranking amongst other running backs before the season
(average draft position) and after the season (fantasy points). Of the
74 rookie running backs since 2000, only 24 of them performed better
than their average draft position which is equal to only 32.4%. However,
only 38.2% of the non-rookie running backs performed better than their
average draft position since 2000 which isn’t a huge difference. As you
can see, by drafting a rookie running back, your chances to make a good
pick are 5.8% lower than by drafting a non-rookie running back.
By looking at the
data, I noticed that the lowest average draft position for a running
back since 2000 was 14. Moreover, it is evident that players drafted
later in a fantasy draft are more likely to improve than players drafted
early in drafts because they have more room to improve. For that reason,
instead of comparing the rookie running backs with all non-rookie
running backs, I thought it would be fairer to compare them with only
the running backs that were between the 14th and 68th running backs
taken in fantasy drafts. This ensured that the average of the average
draft positions for both groups would be similar. By choosing only that
group of running backs, the percentage of non-rookie running backs that
improved increased from the original 38.2% to 42.6%. This means that
your chances of making a good pick in your fantasy draft now decrease by
10.2% when you choose a rookie running back over a non-rookie running
back.