DENVER – The San Jose Sharks’ path toward their first postseason appearance in seven years might have just become a bit more challenging. The Los Angeles Kings, one of the Sharks’ chief competitors for a precious Western Conference playoff spot, made a significant splash on Wednesday, acquiring high-scoring winger Artemi Panarin from the New York Rangers for prospect forward Liam Greentree and a conditional third-round draft choice. Soon after the trade was completed — mere minutes before the NHL’s roster freeze at noon (PST) on Wednesday — the Kings signed the 34-year-old Panarin to a two-year, $22 million contract extension. Panarin’s contract had a full no-movement clause,...