Brock Purdy will soon be the NFL's all-time leader in career passer rating

Brock Purdy stands on the brink of shattering the NFL record for career passer rating, edging out Lamar Jackson's current official record of 102.7. To claim this prestigious title, a quarterback must achieve 1,500 career passing attempts, and Purdy is just shy of that milestone, boasting 1,495. On Monday night, when Purdy throws his fifth pass against the Commanders, he will indisputably own the highest career passer rating in NFL history.

Even if Purdy were to throw five interceptions right at the start of the game, his passer rating would still surpass Jackson's record. If Jackson were to throw five picks in his subsequent five passes, his passer rating would drop to an even lower 103.7, still trailing behind Purdy's rating. Passer rating, a statistic introduced by the NFL in 1973, has its limitations as a measure of a quarterback's ability.

It tends to overvalue completion percentage, assigns arbitrary weight to certain statistics, overlooks crucial factors like first downs and sacks, and fails to account for other aspects of a quarterback's performance, such as running the ball or committing turnovers. Despite these shortcomings, passer rating remains a generally accepted metric for assessing a quarterback's overall effectiveness in the league, and Purdy's superior rating firmly establishes him as the greatest passer in NFL history.