A problem is Shanahan's system is not a good fit for our defense. We play a little loose to keep everything in front of them. That is a staple of the Shanahan offense. Underneath stuff and moving the chains. Jones is a better fit than Purdy for that. He'll gladly check down if the coverage is good. Purdy not so much.
That is why we have trouble with their offense. I hope Shula plays everything closer to take that away. But it would go against their philosophy to prevent big plays. They want to be patient and wait for a mistake like bad pass, drop, penalty, etc. Tighten up as they get closer to the goal line. Last game they were good in the second half. Only gave up a couple field goals in regulation.