The most commonly projected prospect to the 49ers in mock NFL drafts is North Carolina quarterback Mitch Trubisky.

The line of thinking is simple, if not a touch lazy. The 49ers will be in the market for a quarterback, Trubisky is widely considered the most polished of the class, and his value will be inflated, causing him to land second-overall to San Francisco.

But mock drafts, particularly in February and March, often look drastically different than when the names are called by the commissioner on draft night. The combine, pro days, injuries, interviews and all sorts of minutiae is picked apart by front offices, often leaving fans surprised at their favorite team’s selection.

I’ve tried to make it clear, at least early in the draft process, that I don’t think a quarterback will be worth taking by the 49ers with the second-overall pick.

That’s because the worst thing a rebuilding team can do is miss on a quarterback with a high selection. It’s a common theme among bad NFL teams. E.J. Manuel, Blake Bortles, Johnny Manziel, Blaine Gabbert – and so on.

There are far more misses than hits when it comes to quarterbacks in the first round, which is why the 49ers should find the best possible player with the second pick, regardless of position. They have needs up and down the roster.

And it sounds like NFL Network’s draft guru Mike Mayock agrees. He doesn’t think a quarterback will be ripe atop round one.