Put simply, Sparano isn't ready to pick just one guy.
"I'm not really in a hurry to do that right now," he said. "I mean, I kind like seeing' both of them play. I think they're both good players. I'm not in a hurry to do it, but if it happens, because one guy just completely takes it over, and that's the way it goes, then that's the way it goes. So, I mean, if I'm just looking out there and I'm thinking, ‘There's no way I can leave this guy off the field,' then that's what we'll do. But until this, I think I'll rotate."
For the record, Sparano said he thought both Smith and Davis played pretty well in Sunday's opener, although everyone saw Smith bite on a double move by Falcons wide receiver Roddy White, although he got bailed out when quarterback Matt Ryan misfired on the deep pass.
For their part, no one would expect either rookie to complain about the current setup, although it had to come as a shock to Smith considering all indications in the preseason were that he had won the starting job.
From this end, it's clear both had an edge over the other in certain departments.
For example, Smith is better with the ball in the air and he's much more likely to come up with an interception or a pass break-up. On the flip side, Davis is the better tackler — in fact, he probably is the best tackling cornerback the Dolphins have had in a while.
By mixing and matching, the Dolphins get a little of both. How that plays out over the next few weeks remains to be seen, but one would expect Sparano to stick with just one guy at some point.
In the meantime, look for the rookie rotation at cornerback to continue.