for whatever it is worth I read once that athleticism is important for pass blocking. If you go into the practice settings and compare run blocking and pass blocking settings that would seem to be the case. My run blocking numbers are conditioning 23, strength 38, agility 15, blocking 39. pass blocking numbers are conditioning 27, strength 31, agility 20, blocking 39. As you can see, the conditioning and agility numbers are higher and strength is lower in pass blocking practice. Blocking did not change. In the players guide you can see increasing the conditioning and agility will improve athleticism. I had a coach once tell us that pass blocking is like wrestling while running backwards so you damn well better be in shape and be agile.