In the matter of the assistant coaches of Kyle Shanahan, head coach, San Francisco 49ers.

This investigation has found that Shanahan’s choices:

1. Were restricted by the lateness of his hire, as other assistant coaches took jobs elsewhere while Shanahan still was coaching the Atlanta Falcons offense during the playoffs.

2. Mostly worked with Shanahan in Atlanta, which is good.

3. Mostly lack experience, which may not be so good.

Brief bios of each assistant follow.

Click here to read the rest of my Wednesday column.