PONTE VEDRA BEACH, Fla. -- Tiger Woods was nine shots out of the lead, not the best position at The Players Championship, especially since he had not even started his round. Perhaps the bigger surprise was the guy who posted the record-tying round Thursday.

Roberto Castro had only played the TPC Sawgrass in a practice round. He made a debut he won't soon forget.

There was the 9-iron to a foot on the island-green 17th and a 4-iron to about the same tap-in range on the 18th, the hardest hole on the course. He hit a 3-iron to 3 feet for eagle, and twice hit wedge so close he didn't even have to read the putt.

When his memorable day was over, Castro had a 9-under 63 and his name in the record book twice. He tied the course record held by Fred Couples and Greg Norman, and his three-shot lead was the largest margin after the opening round at The Players in 21 years.

He led over Rory McIlroy, who broke par for the first time in his fourth appearance with five birdies after the turn and conservative play off the tee on the front nine for a bogey-free 66. Zach Johnson also had a 66 while playing in the pristine morning conditions.

Woods had to work a little harder in the afternoon. Not only did he spot Castro nine shots, Woods had never broken 70 in the opening round in his 15 previous tries.

"It was a day that I felt I had to shoot something in the 60s," Woods said.

He ran off four straight birdies around the turn. He was on the cup of his first bogey-free round at The Players until his 8-iron from 200 yards went just over the green and he flubbed his chip. The bogey gave him a 67, a strong effort considering he knew he had a lot of ground to make up before hitting his first shot.

Roberto Castro is not well known even in golf circles. His mother grew up in Peru and moved to America as a teenager along with her sister, Jenny Lidback, who played the LPGA Tour. He toiled in the minor leagues for five years after getting his industrial engineering degree at Georgia Tech.

Courtesy of (AP)