At first it seems that the Oil are doomed, but then you can look back to the first 2 periods of game one and consider that Roloson didn't do much then. If Edmonton can work over the Canes like they did for 40 minutes in game one and continue into a full game, the loss of Roloson won't be as big a deal.
So do they go with Conklin or Markkanen? Both have similar stats, but Conklin only played 1/2 the number of games that Markkanen did.
Consider too, that Edmonton had so much time off before game 1 and could have felt some fatigue going into the third.
I predicted Oilers in 6 and that they would lose the first game - I'm sticking with it.

