Todd Dewey | Las Vegas Review Journal

After Jon Gruden resigned as Raiders coach Monday night, the line on Sunday’s game at Denver moved from Broncos -3 to -3½ and has since climbed to -4 at the Westgate SuperBook.

But SuperBook vice president Jay Kornegay and other Las Vegas oddsmakers said Gruden’s sudden departure didn’t impact the line. The Raiders’ poor performance in Sunday’s 20-9 home loss to the Chicago Bears did.

“It’s very rare that we would move numbers based off a coaching change,” Kornegay said. “In this case, it holds true. We haven’t adjusted any numbers based off of Gruden’s announcement.

“Most of that movement was based off their performance against the Bears. But there has been a little bit of money on the Broncos coming in.”

Circa Sports and the South Point reported taking bets on the Broncos -3 as the Gruden news was breaking before moving the spread to 3½.