2016 U.S. Open: Jordan Spieth opens as tournament favorite

Jordan Spieth, who lost a chance at history with his meltdown at the Masters, is back on top of the list of favorites for the U.S. Open.

Spieth, the defending U.S. Open champion, was installed by the Westgate Las Vegas SuperBook on Monday as the favorite at 7-1 to win the tournament, which tees off June 16 at Oakmont Country Club.

Rory McIlroy and Jason Day are each at 8-1. Dustin Johnson, who finished in a tie for fourth at the Masters, opened at 15-1, followed by Rickie Fowler, Adam Scott and Justin Rose, each at 20-1. Phil Mickelson is 30-1 and Tiger Woods is listed at 100-1.

As defending champion at the Masters, Spieth gave it away to Englishman Danny Willett, losing a five-stroke lead early on the back nine at Augusta National Golf Club on Sunday. Willett fired a bogey-free 5-under-par 67 to win the 80th Masters.

"It was a tough 30 minutes that hopefully I never have to go through again. I just made a bad swing on three holes in a row," Spieth said Sunday.

"Big picture? This one will hurt."

When Spieth headed to the back nine Sunday, he was a minus-2,500 favorite at the SuperBook to win his second straight Green Jacket, according to ESPN.com.

Spieth followed back-to-back bogeys on holes 10 and 11 and then it unraveled all at once in the heart of Amen Corner, when he hit two shots into the water and a third into the sand en route to a quadruple bogey-7 on the par-3 12th hole. More money was bet on Spieth to win the Masters than any other golfer at the SuperBook.

Spieth finished in a tie for second behind Willett, who opened at 30-1 to win the U.S. Open. The first-time major winner was a 150-1 long shot to win the Masters to start the year and entered the tournament at 50-1.

Jack Nicklaus wrote a heartfelt message on his Twitter account after the 22-year-old Spieth's Masters collapse.

"I think the whole golfing world feels for Jordan Spieth," Nicklaus wrote Sunday night. "He had a chance to do something truly special and something very few have done before -- and be the youngest to accomplish that --and he just didn't pull through. My heart goes out to him for what happened, but I know that Jordan is a young man who will certainly learn from this experience and there will be some good that comes out of this for him. He's a wonderful talent and a wonderful young man."