When it comes to the best lines in the NHL, Ryan O'Reilly has an expert opinion.
He has centered a few great ones during his career, but the St. Louis Blues star is more familiar with having to defend against them. Like that one on the Dallas Stars that's currently reigning over the rest of the NHL: Jason Robertson's line with Joe Pavelski and Roope Hintz.
"I just remember playing against them, you had to work to close that gap and be tight to them.