issue was that on key plays where the pressure is on to get the 1st, score a td, etc, defenses sent pressure. Earlier in the year, it was handled better, but after injuries, Retzlaff frequently was hurried in his throws which lead to mistakes. Completely whiffed blocks blew up plays and Retzlaff takes the blame for not finding an open guy or making an erratic throw, or ARod calling the "wrong" play because the running back can't find a hole. 

There's still improvement that needs to be made on the O-line.