The Cardinals offensive line gave up four sacks. It could have been more had Palmer not been quicker with getting the ball out. It was not a good showing for anyone on the offensive line.
For the first time since I can remember, there must be some blame in this loss placed on coaching. The Cardinals failed on a fourth and one instead of attempting a field goal in the first half.
Then coach Bruce Arians challenged Seahawks Bobby Wagner leaping to block a field goal. To top it off, Arians chose not to allow Johnson to finish what he started after getting the ball down to the one-yard line in overtime. At least use your downs there. The Cardinals kicked on third down.
Penalties also played a part. The Seahawks were more ugly than bad in this area with 10 penalties for 90 yards. The Cardinals had six penalties for 45 yards but it was the timing of the penalties that was bad for them.