I think they are legit (I have had them ranked in the top 10 since rankings started), because the Colts will usually be leading, and that will allow their great pass rushing DEs to pressure QBs, get some sacks and create turnovers. Getting rid of the run defense liability known as Cato June, putting Keiaho in the lineup, and most important, having Bob Sanders healthy makes them a MUCH better run defense than they were. If their run defense is good, they will be a great fantasy defense because if teams are forced to throw the ball a lot, Freeney and Mathis can pin their ears back and go after the QB, and they will cause problems.