The Patriots took someone who is historically a right tackle and moved him. Here's an idea why.
ESPN's Mike Reiss noted that the Patriots played tackles LaAdrian Waddle and Marcus Cannon as "the top two players at the position" at practice this week. The Patriots were without incumbent starters Nate Solder and Sebastian Vollmer.
Waddle was aligned on the left side, with Cannon on the right. This statement of usage reveals a lot about the Patriots tackle depth this season.
1) Tight end Michael Williams is remaining at tight end, and not moving to tackle.