Orton compiled a highly efficient passer rating of 103.3 in directing an offense that outgained the Detroit Lions 336 yards to 234 in a 38-6 victory. Grossman's career high single-game passer rating is 91.9.
"I thought he was in control of the football game," Bears coach Lovie Smith said of Orton. "He managed it well. He just led us.
"He made the right reads, made good throws. He did what your quarterback is supposed to do -- lead a team to a win."
The rookie went 14-of-21 for 150 yards with a touchdown and no turnovers.
Orton's 28-yard touchdown pass to Muhsin Muhammad expanded the Bears' lead to 24-6 and helped trigger the rout.
"It felt great, just being able to see the field and make a good read and deliver the ball and Moose made a good catch on it," Orton said. "He just ran a post (pattern) and they went to the single safety and right before the snap and I saw it. And I thought I was going to have Moose and just kind of had to fit it in there.
"And he just kind of got his body in front of the ball and kind of shielded off the defender. So it was a great catch."
The play wasn't the kind normally expected from a quarterback who is required only to "manage" a game.
Orton doesn't think of himself as a caretaker of the offense, someone to hand off and play it safe. "I don't think game management is being timid with the ball or being afraid to throw a pick," he said. "I don't think that is it at all.
"I think game management is knowing when to take a chance and knowing not when to take a chance. I think I did a really good job of that today, something I really concentrated on during the week."
Bobby Wade's 73-yard punt return for a game-turning TD -- the first of his career -- wouldn't have happened last week because he was inactive against Washington despite breaking a 54-yard punt return for a TD in preseason against the Colts.
Until Friday of this week, he thought he was going to be in active again. He said he had read this in a newspaper. Then he showed up for practice Friday and found out he'd play.
"I didn't know what to think," he said. "I guess you don't believe everything you read."
"Personally, it was tough," he added about sitting. "I wasn't so much disappointed because it's a numbers game and I don't know exactly what goes into that but all I can do just when my number is called just go and put my best foot forward really."
FILLING THE VOID
Defensive tackle Alfonso Boone got pressed into playing in the defensive end rotation after starting left defensive end Adewale Ogunleye suffered a left ankle sprain in the first quarter.
"We were down an end and we had to give guys a break," Bears defensive coordinator Ron Rivera said. "And Alfonso, being a big, athletic body out there, he did a tremendous job out there. We put him in a couple tough situations and he responded very well."
Ogunleye, who had his season ended by a torn right ankle tendon last year, was X-rayed at the game and coach Lovie Smith said there was no broken bone.
Smith, though, had said X-rays of safeties Bobby Gray and Cameron Worrell were negative in preseason but both had season-ending injuries.
The other Bears injury was an ankle injury to linebacker Joe Odom.
MORE THAN WORDS
Bears cornerback Nathan Vasher was better at providing pass coverage than at spewing trash talk.
But he didn't run off at the mouth to Williams, who he used to face every day in practice.
"I said nothing," he said. "Not top much, nothing to really report.
"I wish I had said something."