I guess one way to look at it is that Granato has three "rookies in training" on the forward lines: JJ, Quinn and Krebs. Krebs has more NHL experience but it seems like he's not advancing as quickly as Peterka. I wouldn't be surprised if, in the absence of injuries on the forward lines, we see a rotation emerge involving those guys (although if Peterka keeps up the good work he might very seldom be the odd man out).