The 49ers just made an interesting change to their offensive coaching staff. They promoted assistant passing game specialist Klay Kubiak to offensive coordinator. It's unclear how Kubiak's job will change.

The 49ers have only had one other offensive coordinator by title since Shanahan joined the team: current Dolphins head coach Mike McDaniel

The San Francisco 49ers have removed Nick Sorensen from his role as defensive coordinator and promoted passing game specialist Klay Kubiak to offensive coordinator, coach Kyle Shanahan said Wednesday.

San Francisco 49ers head coach Kyle Shanahan won’t get in the habit of giving Klay Kubiak offensive play-calling duties, but he will be giving his assistant a promotion. On Wednesday, three days after he allowed Kubiak to serve as the play-caller in a no-stakes 47-24 loss at Arizona in the regular-season finale,