The 49ers used to brag about how good their quarterback room was.

No, they didn’t have a franchise quarterback per se, but they had three quarterbacks they felt they could win with, and depth at that position was extremely important to them.

Not anymore, apparently. Now they have Brock Purdy, who they believe is their franchise quarterback for the next 10 years. So suddenly, the quarterback room is irrelevant. They have Joshua Dobbs, a second-string quarterback who really should be a third-stringer. And they have Brandon Allen, a third-string quarterback who really should be a fourth-stringer or a coach.

Which means the 49ers really need a second-string quarterback. Someone with potential and upside. Someone the 49ers draft this year. Someone like Purdy.

Because as good as the 49ers are, there’s no guarantee they can win games with Dobbs or Allen. Last season, Dobbs started 12 games for two teams, threw 10 interceptions and fumbled 14 times. Not great. And Allen has started only 9 games in his career, winning just twice.

The 49ers need to upgrade their quarterback room. And they don’t have to draft one in Rounds 1, 2 or 3. They can upgrade their quarterback room by drafting a QB in Rounds 6 or 7. Because they don’t need the biggest guy with the strongest arm. They can win with a short quarterback with a weak arm if he’s smart, poised, mature and has accuracy and anticipation and is mobile.

Not many teams are looking for quarterbacks who fit that description. The 49ers have a type, and it’s abundant. Go draft one.