No teams scheme for preseason games. So Robertson hasn't even seen a defense committed to taking full advantage of his inexperience.
Both Dick Jauron and Jim Miller believe Robertson is the man for the job.
My gut feeling is we'll go with Robo (Robertson)," Jauron said when asked who would be the starter.
"We have all the confidence in the world in him," Miller added. "He knows he's got a lot of big tests ahead of him, but he'll be ready."
Wylie said it doesn't matter, and added that goes for his rookie left tackle Marc Colombo.
"I would be confident with either one of them," he said. "If it really came down to (teams attacking them), we could help them. There's always ways to help them.
"I let those two play with no help through preseason. All preseason they were alone and they had to show me they could play."
Robertson had two key penalties and allowed three sacks in preseason.
Both were key parts of a Bears ground attack that ran for a preseason high 207 yards on 38 carries.