Can Trevor Penning play Left Guard?

Almost anyone who plays T can move inside to G.
T have better feet than G that is why so many teams draft a T & move them inside to G.

It is much harder to draft a G & move them outside to T.
It happens occasionally but not often...

Penning has tremendous pancake run blocking skills but this isn't a good reason to move him inside.

As far as the pressures that are now tracked...
If your allowed pressure's didn't force a pick, a throw away, an incompletion, a loss of yardage due to the QB throwing to his check down
they are completely useless stats...

He didn't allow many sacks & that matters.
Jahri Evans and Carl Nicks were college tackles who moved to guard, and had great success at it. They were also each about 6’4”, whereas Penning is 6’7” like Andrus Peat is. It’s a 3-inch difference but there aren’t a lot of 6’7” guys playing guard for a reason - it’s very hard on their bodies from a leverage standpoint. Peat had a lot of lower body injuries while playing guard, but when Terron Armstead would leave/miss his 4-8 games per season and Peat would move to LT, he typically played fine and pretty much never got hurt playing there.

I think the recipe for college tackle, pro guard is a guy in that 6’3”-6’5” range who graded well at run blocking (maybe played in a run-first system) who moves well, to be effective on pulls and traps. Quick hands are less important than strong hands, but still want someone who’s going to win those battles when brute strength isn’t enough to carry a series of reps. I don’t know what prospects fit that profile as of now. Maybe one of the draftniks here can add some input.