NFL QB Formula
Monday, December 13th, 2004You know what’s absurd? That Atkins guy? He died from slipping on a potato.
The only thing harder than figuring out my cholesterol level is trying to calculate the NFL’s QB rating formula. My cholesterol? If you told me I had a level of 500 I wouldn’t know if that was good or bad, high or low. Change it from 500 to 50 or 5 or .05 and I still don’t know any better. If you don’t know the range of values or have some idea of how they are distributed, the number is meaningless.
Same with the NFL’s QB rating formula. The formula is primarily based upon four factors:
• Percentage of completions per attempt
• Average yards gained per attempt
• Percentage of touchdown passes per attempt
• Percentage of interceptions per attempt
Here’s how you calculate your very own QB rating.
Take completion percentage and subtract 30. Multiply by .05. The result is a point rating.
If the point rating is less than zero, count it as zero.
Next take passing yards divided by passing attempts and subtract 3. Multiply by .25. Again, if the rating is less than zero, count as zero. If rating is greater than 2.375 count as 2.375.
Next take touchdown passes divided by passing attempts and multiply by .2. Again, if the number is greater than 2.375, count it as 2.375.
Finally, take the number of interceptions thrown and divide by passing attempts, then multiply by .25. Multiply by .25 and then subtract that number from 2.375.
Again, if the final number is less than zero, treat that number as zero.
(see Leaf, Ryan, http://www.nfl.com/players/playerpage/12506)
To complete the formula, take those four numbers, add them, divide the total by six and then multiply that result by 100.
Make sense? I didn’t think so. Here’s what’s even weirder. A quarterback can complete 30% of his passes for 3 yards per attempt and still maintain a QB rating of 0.
Does this really matter? No. But it still annoying the heck out of me. I’m just saying.