Center Sidney Crosby's statistically successful return to the Penguins' lineup has been brilliant at times, quiet at others.

Crosby leads the NHL in points per game and has produced prolific performances. A streakier Crosby -- likely because of his long time away -- has emerged.

Consider that Crosby has been held without a point in seven of his 18 games this season -- 38.8 percent of the time. In contrast, Crosby has been held scoreless in 109 of 430 career games, or 25.3 percent of the time.

His scoring binges this season could indicate that a more dominant Crosby is lurking, with only more game action required for his game reach its peak.