PFF O-Line grades are hit or miss.

I think they are pretty good for the 49ers though. They have Trent at 86 which is about right he has been his regular pro bowl level self this year but maybe taken a slight step back. Banks at 75, which is about right. He has been pretty good when healthy and gets a lot of benefit from playing next to Trent. Brendel the C is the worst by far with a 63, which might be a bit generous, he is terrible. Puni the rookie has been good with a 76, about right. And Mckivitz has been solid with a 73, which is also about right.

49ers OLine other than Brendel has held up fairly well this year. Their issue is getting burnt or taking dumb penalties at the worst possible time. They will play great and then get a penalty in the red zone or leave an unimpeded rusher on a 3rd and goal.