Las Vegas ? The Boston Red Sox are 2-1 favorites to win the World Series and end the magical run of the Colorado Rockies.

“Colorado is a real Cinderella story,” said Jay Kornegay, director of the sports book at the Las Vegas Hilton. “We’re just not sure when it’s going to strike midnight.”

Las Vegas oddsmakers put the Red Sox at minus-$2, meaning every $2 bet will win $1 if Boston wins. Colorado is plus $1.70, meaning every $1 wins $1.70 if the Rockies take the series.

The Rockies have won 21 of 22 and are headed to their first World Series after sweeping Philadelphia and Arizona in the NL playoffs. Boston won three straight against Cleveland in the AL championship series to clinch its spot.

“The Red Sox are favored because first of all they’ve been the best team in baseball all season long,” Kornegay said. “They have a league high of 96 wins and they have Josh Beckett going at least two games in this series. He’s been pitching exceptionally well in the postseason.”