I think Rask can play 4th line C. It's not so much that he is bad. He is just innocuous. It was an extremely short sample size, so take this with a grain of salt, but Sturm looked better to me. Stronger, faster, good two way game. Fehr was also better than Rask, IMO. He and Foligno were good on the PK. Does anyone trust Rask on the PK?
I sense a situation where Sturm is sent to the AHL, or sat on the bench because Fenton wants Rask to be played so the Nino/Rask trade doesn't look so bad. With Koivu out, we won't have to deal with that situation till about midway through next season. I see Staal as #1C, Ek as #2C, Rask and Strum as #3/4C. If we get a FA C, then one of Sturm or Rask will move to wing, or get sent down.
Unless Rask picks his game up, I see BB and Fenton being at odds with this roster. We already saw it this year with Bitetto, Prosser, Seeler, and Rask....maybe Fiala.
Rask...Fehr...Sturm...it's too early to say about Sturm, but in general there isn't that big of a talent separation. The fact that Rask makes 4M is the elephant in the room. Paying him 4M and Foligno 2.75M to play on the 4th line? Not great.