Champs have one thing in mind: repeating

PITTSBURGH -- It only took a couple minutes on Friday to unveil the Pittsburgh Penguins' Stanley Cup banner and slowly raise it to the Mellon Arena rafters. But in that short time, a lot went through Sidney Crosby's mind.   The reality set in that this would be the final opening night at Mellon Arena. And while his team was celebrating its pinnacle moment of winning, Crosby was thinking of losing. There was plenty of it during his rookie season, when the Penguins had 58 points en route to the worst record in the Eastern Conference.   "I remembered just going through those years," Crosby said.   The Penguins were gathered as a team in a half circle. The Stanley Cup stood on a table in front of them. It was one last celebration to soak in their accomplishments from the spring.   Brooks Orpik stood next to Marc-Andre Fleury and Maxime Talbot, and the three glanced at one another as the banner rose.   "We were having chills watching it,&...