Ivory or Darkwa Flex?

I’m in a standard league. If Fournette doesn’t play who would you start as a Flex. O. Darkwa or C. Ivory?

Ivory for sure if Fournette doesn’t play. He could be an ok even with Fournette playing. I see them getting up and playing Ivory more since Fournette is hurt in fear of him reinjuring his ankle/foot.