From "Mr. Irrelevant" to indispensable starter, Brock Purdy’s contract demands could redefine the 49ers’ offseason strategy.

A look at the quarterback's strengths and shortcoming as the 49ers begin negotiating a new, multiyear contract.

Brock Purdy will enter his fourth season this year and we're starting to learn exactly who he is. In the first half of games, he's great. He has thrown 35 touchdown passes and just 8 interceptions and his career passer rating before halftime is 106.