"I told him what great shots those were to save double bogey, " says Rotella.
The German was six under after a 73 which included a closing double bogey.
After a few rushed shots that confirmed my amateur status, a double bogey was recorded.
Saturday's round included six birdies, a bogey and a double bogey at the notorious 17th.
She then hit her approach through the green and finished with a double bogey.
Annika Sorenstam had a double bogey in her 73 and is five shots off the pace.
But the 45-year-old duffed his chip on the 15th to double bogey, leaving Wilson to challenge Casey.
But starting with a double bogey on 14, he dropped 11 shots over the final 14 holes.
Woods took double bogey, and only an eagle on the final hole kept the damage to a minimum.
Those came at the same time Scott Stallings made double bogey at No. 15 to drop out of the lead.
Lee Westwood fell nine shots behind with a double bogey on the par-3 14th and a bogey on the par-5 17th.
MacKenzie, who led by two when the day began, took a double bogey at 10 and a bogey at the 17th to fall back.
He added that some well meaning friends had contributed to his one major moment of anxiety, a double bogey at the 15th.
His first chip didn't quite make it onto the putting surface and rolled back to his feet, leading to a double bogey.
Defending champion Frederick Jacobson was also out of sorts as he dropped three shots in his first four holes, including a double bogey.
Colin Montgomerie was six under after 12 holes but was rocked by a double bogey at the 14th and ended with a 68.
It is the first time Woods has played the tournament, and his four birdies were tempered by three bogeys and a double bogey.
But England's Greg Owen was very much in contention after a 68 took him to five under despite opening with a double bogey.
It could have been so much better for the Ryder Cup player, whose three-under-par round was tarnished by a bogey and a double bogey.
He bogeyed four of his first six holes before a double bogey at the sixth and another bogey at last left him on 75.
McDowell, who began the day at five under, slipped out of contention after a round featuring five bogeys and a double bogey at the 17th.
Woods's double bogey on the 14th hole pulled him back into a four-way tie with Sergio Garcia, rookie David Lingmerth of Sweden and 49-year-old Jeff Maggert.
Phil Mickelson opened his final round with four straight birdies, and he was still in the picture until a three-putt double bogey on the 14th hole.
Westwood was heading for a one-under par round of 71 but a double bogey at the 18th spoilt a steady round after his impressive showing on Thursday.
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Montgomerie was tied for the lead with Phil Mickelson playing the final hole but made a double bogey to lose by a stroke to Australia's Geoff Ogilvy.
While McIlroy searches for his best form, former Masters champion Schwartzel shrugged off a late double bogey on his way to a seven-under round which included 10 birdies.
Harrington, the winner in 2007 and 2008, hit a double bogey at the first and never managed to recover on a day where his putting was badly off-colour.
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The Dane had been three clear after grabbing birdies at five of his first six holes, but four-putted the eighth from 40 feet for a double bogey five.
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