49ers Studs and Duds: Brock Purdy, Jordan Mason impress in preseason finale

Let me make this clear off the jump:

The 49ers had no excuse not to look good on Friday night in Las Vegas.

Not only are the Niners a significantly better team than the Raiders, but San Francisco put a bunch of first-string players on the field in the team’s preseason finale.

And the Raiders did not.

So Brock Purdy and the Niners’ offense should have looked good.

The 49ers’ defense — even without some of its cream-of-the-crop stars — should have commanded the first half game.