Jan 5, 2014, 5:43 PM EST
Petrovic, 21, is dealing with an upper-body injury while Olsen, 23, is struggling with a lower-body ailment.
The Panthers beat the Nashville Predators 5-4 (SO) on Saturday. The Panthers will visit Montreal on Monday, Buffalo on Thursday and New Jersey on Saturday.
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- NHL on NBCSN: Rangers, Canadiens seek edge as divisional battles intensify 0
- Struggling Kings complete the comeback against Blackhawks 11
- Video: Tempers boil over between Capitals, Penguins 42
- Isles’ Clutterbuck latest to be fined for diving 19
- No hearing scheduled for Kesler after ‘dirty play’ on Dorsett 23
- Why NHL fans — no matter where they live — should care about the plunging Canadian dollar 32
- Trade: Pens acquire Lapierre from Blues for Goc 63
- Video: Habs’ Emelin ejected for hit on Stars’ Spezza 31
- Martin Brodeur to retire, become Blues asst. GM (Updated) 45