Dolphins RB Lamar Miller with the starting offense. Think Miller, Moreno alternate early, then Moreno becomes starter, Miller backup.
This could be a situation to stay clear from right now. But with the way Moreno stood out a bit in the last preseason game, he seems to be gaining a lot of momentum in a run game that's struggled so far. Add the fact that he was targeted in the offseason and it could a factor in deciding the eventual starter. If you can get Moreno cheaper, that's probably the best option as Miller's potential is starting to look sketchy.