Fantasy Football : Fantistics!

Projecting Fantasy Football Statistics

During the decade that we've been forecasting fantasy statistics, fantasy football is, by far, the toughest sport to forecast of the 4 major U.S. sports. Possible explanations abound, but logic dictates the most likely explanations for this phenomena are: 

  1. The limited size of the sample in any given year (only 16 games!) , 

  2. The rather high occurrence rate of injuries, and 

  3. The dependence on other position players & the coaches playbook.

The Limited sample size: To produce any meaningful forecasting data, professional statisticians consider 100 observations to be the minimum acceptable size of a sample. As you can imagine, 16 regular season games falls well beneath that threshold. However the cumulative number of observations within a game can constitute meaningful data. An example of this is the average running back who attains 300+ carries in a season. Although the results of these numbers are meaningful, they are skewed by the only 16 (or less) different opponents that a particular running back faces during the season.

High Occurrence of Injuries: For anyone who has not played or watched football....football is a brutal full contact sport....with lots of injuries! And more importantly no one can predict injuries. Thus relying on a drafting model (cheat sheet) which is purely based on individual performances is missing the bigger picture.

Dependence on other Position Players & Playbook: In baseball a batter comes up to the plate and takes a full hack 95% of the time, conversely the opposing pitcher is looking to record an out almost 100% of the time. In football however, almost every offensive position relies on other factors outside of their immediate control. Examples include: a running back who relies on his line to find an opening, relies on his coach to call the play....a quarterback who relies on his offensive line to give him time, his wide receiver to find an opening, his coach to call the pass play....a receiver relies on the quarterback to find the time, his quarterback to find his hands, and finally the coach to call the play (not in this order). As you can see there are a lot of variables that need to work in sync for our fantasy players to perform adequately. Thus, because of this dependence factor, predicting individual performances in fantasy football is much less predictable as many will have you believe.

The key to being competitive, is not knowing who to draft, but rather how to draft. Our VAM drafting model puts you in a position to be competitive without the improbable accuracy of the projected player stats. Sure we spend months working on our individual player projections, and our projections model is 35%+ more effective than using the prior year stats, but it's the drafting order we predicate which will make you competitive. Bottom Line: We do the tedious work, so you don't have to. Whether you are a new or experienced fantasy football player, Fantistics utilizes the probability assumptions contained within the laws of mathematics to give you an edge.

Below is a quick look at some of the forecasting research we've done based on prior year statistics on the major fantasy football positions. It's just part of the what we use in our projections model:

Heading into 2003, Quarterbacks were easily the most unpredictable group among the NFL players. However, over the last 3 years their predictability has risen...many including us account for this shift based on the league's mandate to protect their most precious commodity.

Since many in the fantasy community have caught onto our VAM - Value Based Drafting concept (which elevates the value of RBs) most draft participants undervalue QBs.

Runningbacks once offered more stability to the fantasy roster than quarterbacks. However there has been a decline in their security and health, elevating QB predictability beyond that of RBs.

Runningbacks offer some stability based on their dependence factor, or should we say independence factor. Runningbacks, with the exception of kickers, are the least affected by outside  influences. Positions such as QBs, WRs, and TEs are heavily reliant on other positions in order to execute a successful play.

Wide Receivers NO LONGER offer significant stability. Since 2002 less than 50% of Wide Receivers have come within a 20% tolerance of their previous season's fantasy points.

Although wide receivers do offer more predictability because of their health factor, receivers are highly reliant on someone else (the QB), and should be rated accordingly based on this risk.

Tight Ends have become increasing more predictable. Last year was a banner year for the top 10 TEs. 70% came within a 20% tolerance of their previous season's output.

The main reason for their lack of predictability in the past has been all of the main 3 factors....Dependence, Injury and Play book.  ...

Place Kickers are very predictable! Although their 60-80% reoccurrence rate (within a 30% variance) are among the best relational numbers in fantasy football.... these numbers are also very deceiving. The reason that most kickers fall within acceptable ranges on a year to year basis is primarily due to the fact that kickers are among the lowest scoring positions in fantasy football, thus frequently there is not much point variance between the 6th best kicker in the league and the 15th.

 

You may be asking yourself, so what do the above graphical charts really represent? Well most importantly, they allow us to assign a probability to each NFL position for draft day purposes, making the VAM drafting model more predictable than a simple position scarcity model (Value Based Drafting). This "probability factor" determines the sensible risk level that we should assume for each position, thus allowing our player rankings to have the best mathematical chance to succeed.

Anthony A. Perri - Fantistics Publisher and Sports Statistician

 

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