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Jerraud Powers is average, but he's easily the Colts' best corner.
Starters: Jerraud Powers, Cassius Vaughn
Reserves: Justin King, Kevin Thomas
This is a tough one, mainly because the Colts have exactly zero viable NFL-caliber cornerbacks.
While Powers flashes in and out, mostly out, the rest are a true scrapheap of failure and inexperience.
Cassius Vaughn is admittedly a legitimate guess as a starter, but the reasoning is this: Why not?
We've seen King and Thomas get beat up in coverage. We've seen other Colts corners like Brandon King and Terrence Johnson get burned repeatedly.
After all, this is a unit that tied for a league-worst eight interceptions last season. They had the 31st rated opposing passer rating, at 103.9.
What we have not seen is Cassius Vaughn. He has only three career starts and displayed good athleticism on the field, if nothing else. With another offseason under his belt, maybe he's picked up a few tricks.
He can't be any worse than what we've got.