AUGUSTA, GA -

No Tiger? No problem. In what turned out to be an eventful first day at the Masters, Bill Haas shot a 4-under 68 to take a one shot lead at Augusta National.

Defending Masters champion Adam Scott finished with a round of 3-under 69, the lowest opening score by a defending champion in 13 years.

"There's no doubt winning the Masters last year had me a little more comfortable on the first tee than I've ever been in the past, because I didn't have the legs shaking and nerves jangling for six or seven holes like usual," said Scott.

2012 Masters champion Bubba Watson is also one stroke back of the lead after a 3-under 69. Watson played his first bogey-free round since the 2009 U.S. Open.

Jacksonville beach resident Jonas Blixt took the course Thursday morning. He finished the round with a 2-under 70, tied for fifth.

This is the first Masters that does not involve Tiger Woods in nearly two decades. The number one golfer in the world is home in Florida after undergoing back surgery in March.