As DaSilva says, this OL is far from fully settled.
However...
That tentative starting OL is exactly what most of us projected, too.
Corbett should not be written down in ink just yet, although he probably has the inside track.
Hav is clearly the favorite but he still has to constantly play/practice well enough to remove all doubt in the coaches minds. Evans will not be easy to keep on the bench this year. Hav might even be tradable next season capwise with Evans waiting in the wings.
I doubt that Boom has any future as a Ram OG, but I still see him as a future starting LOT when Big Whit hangs ‘em up. Maybe even some snaps this year if Whit struggles at all.
DaSilva seems a bit premature to dismiss Anchrum already. Anchrum has intangibles that I love. Wouldn’t surprise me one bit if Anchrum sticks on the 53 as a developmental player.
To conclude, Corbett and Hav are not yet engraved in stone and the Rams seem blessed with some good depth on their OL. I’m bullish on this ‘20 Ram OL, tbh.