NHL teams all talk about playing 60 minutes of quality hockey in the playoffs and few actually achieve that objective.

The truth is that teams win playoff games, playoff series and even the Stanley Cup without playing at their best for every period in the postseason. But teams don't win playoff series giving up three goals per game and with their best player - and the world's best player - sitting with no goals and minus-5 rating after the first seven games.

You can't walk 8.7 feet in Pittsburgh these days without hearing someone talking about the Penguins' inconsistencies and Sidney Crosby's unprecedented slump. There is much angst in Pittsburgh the Penguins being down 1-0 and about how out of sync No. 87 looks going into Sunday's Game 2 at home.

"They want the game decided by Sidney Crosby scoring a goal and that hasn't been the case," Penguins coach Dan Bylsma said. "Those questions are going to come about all of us and from that standpoint, I can understand them."

The persistent question is whether Crosby is playing hurt, but his 12-game goalless slump (dating to the regular season) wouldn't be such an issue if the Penguins were playing at a higher level than they have been so far in the playoffs.

In the playoffs, goals are supposed to be more difficult to score, but the Penguins have given up three or more goals six times in seven games. The Penguins boast a high-powered offense, but power play is now clicking at less than 20%. They have now lost three overtime games in this postseason.

"We have not come out to win them," Bylsma said. "We haven't come out to win them with that shot mentality."

After good starts against the Columbus Blue Jackets in Game 5 and 6, they had a poor beginning against a Rangers team that was playing its fourth playoff game in six nights.

Penguins winger Jussi Jokinen said momentum swings are a fact of life in playoff hockey, particularly this season when teams seem to be finding ways to come from behind.