Maurkice Pouncey didn't practice for the second consecutive day on Thursday, leading Steelers coach Mike Tomlin to declare "it's getting to be the witching hour" for his injured rookie center. "He's going to have to show us something very soon," Tomlin said. Pouncey, who suffered a high left ankle sprain two weeks ago, has said if he doesn't practice Friday, he will not play in Sunday's Super Bowl against the Packers.