The defending Stanley Cup champion Vegas Golden Knights are getting back some key pieces just in time for the NHL playoffs, including captain Mark Stone and defenseman Alex Pietrangelo. Stone, who lacerated his spleen Feb. 20 against Nashville, returned to full-contact practice Saturday in preparation for Game 1 of the first-round playoffs Monday at Dallas. “We'll see how he responds with regard to his availability for Game 1,” Knights general manager Kelly McCrimmon said.