Jason Day
Jason Day leads the 2013 Masters after two days. Reuters

Halfway through the 2013 Masters, Jason Day is on his way to winning his first ever Major PGA Tour Tournament.

The Australian leads the field at Augusta at six under par. With a spot atop the leader board through Thursday and Friday, Day is the favorite to take home the green jacket. The online betting Web site Bovada has set his odds of winning the tournament at 3/1.

Day fell just short of winning the 2011 Masters. He is tied for second with Adam Scott, finishing two shots behind Charles Schwartzel.

Tiger Woods played well for most of the second round, but two bogeys in his last four holes put him at three under for the first two days. At three shots behind the leader, Woods is the second favorite with 5/1 odds.

Fred Couples and Marc Leishman are both one shot behind Day at five under par. Couples’ odds of winning his first Masters in 21 years are set at 9/1. Leishman has a 14/1 chance of winning the green jacket, according to Bovada.

Three golfers are tied at four under par. Brandt Snedeker (8/1), Jim Furyk (10/1) and Angel Cabrera (14/1) are two shots behind the leader.

Rory McIlroy and Phil Mickelson were right behind Woods as favorites before the tournament started. Entering Saturday, neither is in a very good position to win on Sunday. McIlroy’s odds are set at 20/1 after shooting two under par. Mickelson’s odds aren’t even listed on the site. He went three over par through two rounds.

Click here to see the complete list of betting odds.