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NFL Week 2 QB Review: Josh Allen's breakout, Drew Brees' decline, Carson Wentz's concerning step back

Every week throughout the 2020 season, we'll revisit the biggest storylines around the NFL's quarterback play and try to add proper context to PFF grading and traditional stats.

Before we start, here are a few disclaimers to aid in the understanding of the PFF system and its interaction with box score stats.

  • There's no doubt that quarterback play is the biggest driver of passing production, and most people are conditioned to have a picture of how well a quarterback played based on the five basic box score stats — completions, attempts, yards, touchdowns and interceptions.
  • The reality is that the best quarterbacks will rise to the top, or close to it, statistically over time, but in one-game samples or even full seasons, there are other forces at play that heavily influence those numbers.
  • The PFF grade is here to isolate the quarterback's play away from his playmakers, playcaller, opposing defense and anything else that could influence his statistics. We give credit for good throws regardless of the result, and we do the same for bad throws. The PFF passing grade has proven to be one of the most stable passing metrics available, and we believe adding proper context to every play is crucial for long-term player evaluation.

Week 2 is in the books, so here's a look at some of the top stories from the NFL's return.

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[Editor's Note: PFF's advanced statistics and player grades are powered by AWS machine learning capabilities.]

Five Takeaways

Josh Allen leads an explosive Buffalo Bills offense

This was the kind of game the Bills' front office envisioned when it surrounded Josh Allen with one of the best wide receiver trios in the league.

Allen finished Week 2 with 417 yards and four touchdowns, with 305 of those yards going to Stefon Diggs, John Brown, and Cole Beasley. Diggs has already helped to open up this offense, and Allen has been one of the league's most accurate quarterbacks through two weeks.

Allen's deep ball is much improved from a year ago, as he's already completed seven passes of 20-plus air yards for 211 yards after completing just 18 out of 68 for 589 yards in 2019. The Wyoming product has always had spurts of high-end play in him, and now it is just a matter of maintaining this level and cutting down on the turnover-worthy plays, as he has six through two games.

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