I'm not sure but I don't agree much with his assessment of the OL. Maybe it's one of those "you're not a scout so you don't know" things but I thought Tyron was clearly the best OL out there, followed by Fred. I watched the first half and looked at what each guy did on each play and Tyron looked the best with Fred, Parnell and Free being relatively similar but still a significant difference between them and Tyron. Mack was easily the worst guy out there and I'm not sure how it could be seen any other way.
I'm gonna take another look but I'd say the line was okay as a unit. Fred, Free and Parnell were all pretty solid. Tyron looked very good to me although there were a couple of bad plays and by my count about 5 plays where, either by design or choice of his own, he left Michael Johnson unblocked as he attacked the 2nd level. I'm pretty sure Johnson tracked down the RB or was in on the tackle on the opposite side of the field on each of them. He's a very gifted athlete and can make that play from the backside and I didn't care to see it occur as much as it did just in that one half. Mack was the weakest link, IMO, and it really wasn't even close. He had a couple of really good plays but he had a greater number of really bad plays while the rest was either okay or just barely good enough. There was a play where he was pulling around to the right side and should have had Newman squarely lined up for an easy block. He barely got an arm out as Newman just went right by him and got in on the tackle at the LOS. I really couldn't believe he was that ineffective on what should be one of the easier blocks he could ever be asked to make.
Almost all the TEs had their struggles, Witten with the fewest and Hannah and Escobar having some really ugly and ineffective plays.
I think Frederick impressed me the most. He handled things well, wasn't overpowered that often and had some key pick ups on DEs twisting into the middle as well as by saving the OGs on a couple of occasions.
If you watch Austin's TD right before half, Parnell is out of position and cannot take the DT who's rushing to the outside with the DE coming behind him to the inside. At the snap, the DE feigned a step out and then cut in. Parnell took the bait to the outside and the DT gave Parnell a shot, coming from the inside. The combination put Parnell in a very bad spot and he finished the play by pushing the DT in the back before falling flat on his face.
Free was doing well until the time came for Parnell to take the DT and Free to take the DE. Parnell was out of position so he couldn't take the DT but Free released him to go after the inside move by the DE. Frederick stepped up and popped the DE solidly, knocking him off balance and back about 5 yards away from the center of the field. Free, who had released the DT and was starting to go after the DE, saw this and went back to the DT who had and got a good enough push to move the DT beyond Romo, who had just started to step up into the giant void that was created by Mack losing position and his guy starting to get around him but also created by Frederick putting a shoulder into the chest of the DE, completely clearing the way for Romo to step up and throw the pass.
Here's an shoddy picture sequence that gives a good indication of what Fred did on the play.
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Not necessarily the world's greatest play on his part. He should be expected to make it but it was a very good play nonetheless. Quite honestly, probably not a play Dallas has been getting. At best I think the Cs of the last couple years would have picked the guy up but also likely would have just clogged up that middle part of the field by not being able to deliver that type of shot or by just waiting until the guy came to him.