Lynn Rutherford’s U.S. pairs preview for Worlds, drawn from last week’s teleconferences, highlights Alexa Scimeca and Chris Knierim‘s competitive goals and Haven Denney and Brandon Frazier‘s shift to Ingo Steuer as head coach. Lori Ewing of the Canadian Press previews Team Canada at Worlds, focusing primarily on Kaitlyn Weaver and Andrew Poje. From Lubov Iliushechkina…