Rangers maturing Kid Line looks ready for another playoff run

WASHINGTON — We’ve been searching for a more appropriate and perhaps more respectful nickname with which to anoint the Alexis Lafreniere-Filip Chytil-Kaapo Kakko unit that is still known as The Kids. How about, The First Line? All right, all right, all right, that may not quite apply on a team that struts a top-six featuring Mika Zibanejad, Patrick Kane, Artemi Panarin, Chris Kreider, Vladimir Tarasenko and Vincent Trocheck, but let me tell you, it has not been all that much of a stretch lately. So it was here on Sunday, when Lafreniere scored off a dazzling move, Kakko got one…