This past week there have been so many games where the OL of even good teams are being abused by athletic defenders, O linemen seem too big, too slow and so un athletic , is it time to change to agile but strong 260-270 pound guys that can run (those all tend to migrate to the dL side now), watch a game from the 70s or 80s and o linemen were much better in blocking downfield, pulling and being quick enough to step outside and make a block on the very good defensive ends,, it seems coaches are convinced you have to be about 350 to play tackle,, not sure that is the case,, the d linemen are so much better they may need to rethink this.