Passer rating
The quarterback rating, also Passer rating is a statistical value to describe the performance of a quarterback 's passing ability on and make them comparable. In the National Football League, this value has been calculated since 1960.
Basics
The value calculated from several different statistics:
Calculation
In various leagues, there are different methods for calculating the quarterback rating.
NFL
The currently valid formula was devised by Don Smith in 1973. The highest possible value is 158.3, the lowest 0, the average value of all the quarterbacks in the years 2000 to 2003 was 78.9. A value of 100 is considered a good result.
To calculate first four individual values are determined, which are limited by their calculation on at least 0 and at most 2.375. These individual values are:
The individual values are added, then divided by 6 and multiplied by 100. This results in the maximum value of.
Arena Football League
The Arena Football League calculate the quarterback rating in principle like the NFL, only the weighting of the touchdowns was slightly reduced to.
College Football
In the field of the NCAA QB rating is determined differently and can not be compared to the NFL. The underlying parameters are indeed identical, but have different values based on other statistical rules are weighted differently and not limited to a maximum value.
The formula is:.
COMP stands for complete passes, ATT for pass attempts YARDS for net space gain, TD and INT for touchdowns on interceptions.
The weighting of the individual summands was chosen to reach a value of 100 for an average rating. The skills of college quarterbacks were statistically evaluated over a longer period and the factors adjusted so that the score was 100.
GFL
In the German Football League, the calculation of the NCAA ( College Football) will be used.
Criticism
The quarterback rating is controversial for several reasons.
The most common criticism is that the quarterback sack ( the quarterback is brought in the backcourt to the case before he can throw a pass ) are not, what might persuade a quarterback who thinks of his statistics, to a bag instead of accepting one for to throw the team more advantageous incomplete pass, which would have a negative impact on the statistics, namely, the rate of complete passes and the number of yards per attempt.
Another point of criticism is that the running qualities of the quarterbacks are not considered. Just lately occurred in the NFL many quarterbacks on that can run with the ball also excellent, as Vince Young, Donovan McNabb and Michael Vick. This performance is thus not statistically taken into account ( at least not in quarterback rating).
To address these two points, instead of the number of yards per pass attempt has been suggested several times that number to refer to yards per attempt, in which the quarterback is much more involved in the calculation. This would also include the own runs and sacks next to the pass attempts.
A third complaint is aimed at the distinction made in the NFL and AFL artificial limitation of individual factors on 2.375. This causes, for example, that a quarterback who completed 77.5 % of his passes, is also rated as one who brings 90 % of his passes at the man. However, this limitation becomes less important, are the more pass attempts of the quarterbacks taken into account, as well as a rate of 77.5 % of complete passes is achieved, at best, in some games, but not for a longer period - the best season values of all times are just over 70 %.