[BACKCHECK!!!]

Just to elaborate a tiny bit, you can't look at a PDO and say "this team is going to regress", because the good teams don't regress.

And you can't look at a low PDO, and say the team will improve, because crappy teams can sustain low PDOs.

What you CAN do is look at a team like the Flames, and say "They will regress because they suck." The PDO in this case just explains why they've been able to win some games.

Or you look at LA and say they will regress back into a playoff spot, because they are awesome. Their poor PDO only explains why they have been out of a playoff spot.

In the case of LA and Calgary, it is (probably) mostly luck. Their PDO is the opposite of what their roster should be doing. That suggests they will regress

The Pens and Oilers on the other hand have PDOs in line with their expected abilities. They will probably not regress.

But in all cases, we're just saying "the good teams will be good, and the bad teams will be bad". The PDO does not predict what will happen in any of these cases.