Marc Leishman is the surprising early leader at the Masters.
The 29-year-old Australian shot a 6-under 66 Thursday for a two-stroke lead over another unheralded player, England's David Lynn, who opened with a 4-under 68.
Leishman missed the cut in 2010 and is playing in just his second Masters. He surged to the top of the leaderboard with four straight birdies on the back side, starting at No. 13. Leishman came into the first major of the year after missing two straight cuts.
Tiger Woods is also off to a strong start in his quest for a fifth green jacket. He was three strokes off the lead at 3 under through 13 holes. Woods birdied the sixth and eighth holes. That left him two strokes behind Lynn approaching the turn Thursday.
Donaldson becomes the fifth golfer to make a 1 at the 180-yard hole known as Juniper. And it's the first since Chris DiMarco in 2004.
Overall, it was the 24th ace in Masters history. Last year, Bo Van Pelt and Adam Scott made holes-in-one at No. 16.
Donaldson's brilliant shot left him at 1 under for the tournament, three strokes behind the leader, David Lynn of England.
About three hours before Woods teed off, the tournament began with ceremonial shots from three of golf's greatest players - 83-year-old Arnold Palmer, 77-year-old Gary Player and 73-year-old Jack Nicklaus.
Palmer was clearly pleased with his effort, which settled right in the middle of the fairway. He pumped his right fist as the crowd roared.
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