Mothman wrote:
Other than the obvious (+1.3 is better than -2.4), do we know what that means? Does it mean he completed passes against the blitz? Ran for positive yardage? Threw for first downs? I'm curious. For example, hypothetically, if a QB is blitzed on 3rd and 9, avoids pressure and dumps the ball off for a 4 yard gain, is that a plus play, a neutral play or a minus play?
https://www.profootballfocus.com/about/ ... erPressure
There's a graph in there. I don't know what it all means but it looks to take into account: sacks taken, avoiding sacks, completion %, TDs, INTs, something called HAT, something called TA, takes into account drops.
Here's another article that provides a bit more information on how they're graded:
https://www.profootballfocus.com/blog/2 ... rterbacks/
Something to consider: if you want to judge a QB that is pressured on 3rd and 9 and dumps the ball off for a 4-yard gain, that may not be necessarily a negatively-graded play if there's not an open receiver.
This is more than just looking at the raw numbers, but looking at the context of the throws made. A positive completion percentage may show a QB dumping a ball off on third down for a short gain that sees the punting team coming on the field. Our grading can look at a quarterback evading pressure, throwing a perfect ball, only for it to be dropped–yet still rewarding the QB for his excellent play.
Then there's this little caveat that, if you're a subscriber, you might have more information to glean from:
Note: PFF Premium Stats also include player-by-player ‘Passing Under Pressure’ pages that break down the numbers and also highlight PFF grading in pressured/non-pressured and blitzed/not-blitzed situations. The same is available for each individual game as well.