I expect Fournier to improve in this series, but even if he doesn't, you have to look at who his opponent has been. He has always been on one of the two worst playoff teams, meaning he has always had to play a top 2 opponent. I'm sure if Evan had been on the Cs, Bucks, or Raptors these past few years, his stats would look a lot better. Not only would he be playing a much worse opponent in round one, but a lot less would be expected of him, too.
I am not going to worry too much about it until the series is over. And if he just continues to be iffy, well, then we should get him for a great deal on his next contract.