A look at the Dolphins cornerback position http://miamiherald.typepad.com/dolp...look-at-the-dolphins-cornerback-position.html
What I got from what Tony Sparano said in the press conference was that everyone is taking turns with the first team. Tuesday just happened to be Sean Smith's turn. I wouldn't say Smith is ahead or behind Green or Davis right now, its probably too early to tell, especially since they haven't played with pads. I am sure that makes a world of difference.