I've brought this up before. In addition to the calf issues that affected Allen most of the season, there is another factor that undoubtedly affected his performance. Until last year, he had never played anything but LG. RG was a foreign position for him. You might say that should make no difference, but it can make all the difference in the world, much like trying to switch sides as an OT. It can also explain why even decent tackles can look mediocre when placed in a position to play both sides. It's great to cheer versatility on the OL, but it is definitely for many reasons not the optimum approach to having a great consistent OL.
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Switching Sides (PFF)
Have you ever wondered why a guy seemingly so suited to the right side of the line can’t cut it there? Or why a player with all the athletic skills for left tackle makes a better player on the right side?
With the growth of the draft into the media event it is today, and of the NFL in general into a 24/7 world of information, there is a tendency for everybody to speak like scouts from time to time.
We all feel we can evaluate talent, analyze players and project them into various different teams, schemes and positions. However, without the practical experience of implementing the theory are we in danger of over simplifying things or underestimating the challenges involved in some of those transitions?
Tradition, Tradition
For instance, many of us often treat positions on the left and right of the offensive line as interchangeable. The assumption goes that if a guy can play left guard then he can play right guard, and if he can play left tackle he can play right — but is that necessarily the case? When it comes to the draft players can come out deemed ‘right tackle only’ by the talent evaluators, but it’s because they are considered to lack the footwork and quickness to match-up against the league’s best pass-rushers on the quarterback’s blindside, not because of any fundamental dominance in technique to one side. Nobody is worried about the actual mechanics of swapping sides, simply about the chance of that player destroying their quarterback if they can’t cut it as a pass-protector....................................
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