USA TODAY Sports

The 49ers will pay Brock Purdy $1 million next season, which means he's still the biggest bargain in sports. But in 2025, he'll be eligible for a contract extension, and it won't be cheap.

Just look at Kirk Cousins, who just signed a huge contract with the Atlanta Falcons. He's 36, he's coming off a torn Achilles, he wasn't particularly mobile before the injury, he's 1-3 in his career in the playoffs, his passer rating last season was 103.8 and he will earn $45 million per season on average.

So what would Purdy be worth on the open market?

He's 24, he's mobile, he's 4-2 in his career in the playoffs and his passer rating last season was 113. By all accounts, he's more valuable than Cousins, which means Purdy should be able to command at least $50 million per season.

But should the 49ers give him that extension next year? Will he be worth all that money to them?

Let's look at his playoff resume.

Start 1: Three touchdown passes, zero interceptions, 131.5 passer rating in a win over the Seahawks. Impressive performance.

Start 2: Zero touchdown passes, zero interceptions, 87.4 passer rating in a win over the Cowboys. Modest performance.

Start 3: Tore his UCL on the first drive of the game and lost to the Eagles. Abbreviated performance.

Start 4. One touchdown pass, zero interceptions, 86.7 passer rating in a win over the Packers. Modest performance.

Start 5. One touchdown pass, one interception, 89 passer rating in a win over the Lions. Modest performance.

Start 6. One touchdown pass, zero interceptions, 89.3 passer rating in a loss to the Chiefs. Modest performance.

With the exception of his first playoff game against the mediocre Seahawks and his abbreviated playoff game against the Eagles, all of his postseason performances have been adequate at best. And it's still unclear if he's good enough to win a Super Bowl. He wasn't good enough last season while making $900,000 on the best roster in football. Will he be good enough in the future when he's making $50 million and the roster isn't nearly as loaded?

Purdy still has much to prove.

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