According to head coach Chuck Pagano, Colts wide receiver T.Y. Hilton is currently going through the NFL's concussion protocol.
The Colts emerged from Saturday night's preseason game with a couple of injuries of note, most significantly the ankle injury to Arthur Jones. We don't know the severity of that yet, but it's not sounding promising. Running back Josh Robinson also suffered a concussion during the game and is going through the league's concussion protocol.
It turns out, however, that Robinson isn't the only Colts player going through the protocol this week.