In the world of football, statistics are instrumental in determining a player’s performance, and one such statistic is the passer rating. The passer rating, also known as the quarterback rating (QBR), assesses the efficiency of a quarterback during a game. This article will provide an in-depth look at how passer ratings are calculated.

Before delving into the calculation process, it’s essential to understand some key terms and variables used in passer rating computation:

1. Att – Number of pass attempts

2. Comp – Number of completed passes

3. Yds – Total passing yards

4. TD – Number of touchdown passes

5. Int – Number of interceptions

Now let’s dive into the calculation process, which consists of five steps:

Step 1: Calculate completion percentage

This step involves dividing completed passes (Comp) by pass attempts (Att), subtracting 30%, and then multiplying by 0.05. This should be represented as:

Completion_percentage = ((Comp/Att) – 0.3) * 5

Step 2: Calculate average yards per attempt

Next, divide total passing yards (Yds) by pass attempts (Att), subtract 3, and then multiply by 0.25.

Average_yards_per_attempt = ((Yds/Att) – 3) * 0.25

Step 3: Calculate touchdown percentage

To compute this percentage, divide touchdown passes (TD) by pass attempts (Att), and then multiply by 20.

Touchdown_percentage = (TD/Att) * 20

Step 4: Calculate interception percentage

In this step, divide interceptions (Int) by pass attempts (Att), subtract from 0.095, and then multiply by 25.

Interception_percentage = (0.095 – Int/Att) * 25

Step 5: Combine and scale ratings

Add up the values obtained from steps 1 to 4, and then divide the sum by 6. Finally, multiply the result by 100.

Passer_rating = ((Completion_percentage + Average_yards_per_attempt + Touchdown_percentage + Interception_percentage) / 6) * 100

It’s crucial to note that passer ratings possess a range between 0 and 158.3. A score of 158.3 signifies a perfect performance by the quarterback, while a zero rating represents a disastrous game.

In conclusion, passer rating computation incorporates several variables and steps to accurately assess a quarterback’s performance during a game. Although it’s not the only parameter used in evaluating quarterbacks, the passer rating is an essential tool for coaches and sports analysts to gain insight into individual player efficiency.