Rock Ya-Sin had a nice start to the season, as he and the cornerbacks actually had a solid game. The passing touchdowns were the fault of the safeties and linebackers (Khari Willis and Darius Leonard, in particular). The Colts’ defense does not need Ya-Sin to turn into a prime Vontae Davis-type cornerback to be successful, but watching him holding his own, especially considering how thin the Colts are at...