Surprisingly, Tony Romo currently leads all quarterbacks with a 140.6 passer rating despite the fact that Drew Brees threw for more yards, twice the number of touchdowns and a higher completion percentage on Sunday. Brees' 137.0 passer rating was brought down by his one interception. What's a guy gotta do?
Passer Rating is kind of a silly amalgamation of stats without regard to situation. Still, there are four criteria for a "perfect" rating of 158.3:
--- at least 12.5 yards/attempt
--- at least .11875 TDs/attempt (one TD every ~8.42 passes)
--- 0 interceptions
--- 77.5% completion percentage
Exceeding any of those stats won't increase your rating (so you can't make up one category with another). In particular, throwing 25 ten yard TDs on 25 attempts will be less than a "perfect" game via passer rating because the YPA would be less than 12.5 in that case.
Brees QB rating was 137.01, without the interception it would have been 149.26.
Rating are computed using the following formula:
Quarterback Rating System
Step 1: Completed passes divided by pass attempts. Subtract .03 and multiple by 5
Step 2: Passing yards divided by pass attempts. Subtract 3 and divide by 4.
Step 3: Touchdown passes divided by pass attempts. Multiple by 20.
Step 4: Interceptions divided by pass attempts. Multiple by 25 and then substract from 2.375.
Rating: Add the sum of the four categories. Multiply by 100 and divide by 6.
The sum of each step cannot be greater than 2.375 or less than zero. Add the sum of
Steps 1 through 4, multiply by 100, and divide by 6.