What happened: Brock Purdy grades at 63.8, Matthew Stafford at 34.1 and Drake Maye at 20.7. The category
Why it matters: Maye's struggles included three deep interceptions in his season opener, per PFF. These early grades assess one part of quarterback performance, not overall passing effectiveness.
By the numbers: The four quarterbacks span 64.6 grading points. The largest gap between adjacent grades is 29.7 points, separating Purdy and Stafford.
What to watch: Watch whether the gaps hold as the quarterbacks accumulate more deep attempts.