Brock Purdy Keeps Improving

Until this past week, the book on Purdy was to force him to throw deep because he's a dink-and-dunk quarterback.

Brock Purdy is more than just a mere system quarterback. He proves that every week.

Jimmy Garoppolo was the quintessential system quarterback, and you could tell because he never improved. His best season as a starter was his first season -- 2017, when he started five games, went undefeated and got paid. After that season, his career has been a slow decline, and now he's just a backup.

But for a time, people thought Garoppolo was special. He wasn't. He was nothing more than a product of Kyle Shanahan. So when Purdy had a hot start to his career, it was fair to wonder if he would be a product of Shanahan as well.

With Garoppolo, Shanahan would accentuate his strengths and hide his weaknesses as much as possible. But as time went on and teams became more exposed to Garoppolo, their scouting report on him became more sophisticated, and eventually put him out of business as a starting NFL quarterback. He never adjusted to the book on him.

Purdy has adjusted. Until this past week, the book on Purdy was to force him to throw deep because he's a dink-and-dunk quarterback. Against the Eagles two weeks ago, he eviscerated them without throwing a pass more than 15 yards downfield.

So this past Sunday, the Seahawks tried to take away the shorter throws and force Purdy to throw deep. And he did. He completed three deep passes and made the Seahawks look stupid for testing him. Now teams have to write a new book on Purdy, because the old one is obsolete.

That's the mark of a good quarterback.