 The leader, England's Aaron Rye, who is at six under. The Boston Celtics say center Kristap Porzingis will miss five to six months after undergoing surgery on his left leg. He will miss the start of next season. In the NHL, Edmonton Oilers general manager Ken Holland is stepping down. Three days after Edmonton lost in Game 7 of the Stanley Cup Finals, Holland is in the Hockey Hall of Fame and spent 34 years with the Detroit Red Wings.