Trevor Immelman of South Africa waves to patrons after winning the Masters at the Augusta National Golf Club on Sunday. - AP

NEW YORK (AP):

FOR SOMEONE who's on top of the world, Trevor Immelman has lately spent a lot of time looking up.

One day after becoming the Masters champion, Immelman was courtside at Madison Square Garden for the Boston Celtics' 99-93 victory over the New York Knicks. He was invited to the Celtics' lockerroom at half-time by coach Doc Rivers, who wanted his team to shake hands with a champion.

"There might have been a trainer that was shorter than me," said Immelman, who stands 5-foot-9 (1.75 metres) with the help of golf spikes. "But I'm standing next to Paul Pierce and Kevin Garnett, and I'm belt-high. It's pretty incredible that human beings are that damn big."

Yesterday, he was taken by limousine to the Empire State Building for a photo shoot atop the tallest building in Manhattan.

There also were TV and radio interviews on the agenda, including appearances on the Late Show with David Letterman and Live with Regis and Kelly.

The highlight, though, might have been half-time.

Born and raised in South Africa, he lives in Orlando, Florida and loves the NBA. Immelman is a regular at Orlando Magic games. Even so, he found it surreal to be among giants in green jerseys, listening to them praise a golfer in a green jacket.

"They were telling me they were in Atlanta and watched the end of the tournament, and that they were proud of me," Immelman said. "It's kind of weird to see superstars congratulate me on something I've done."

Extraordinary feat

There has been a lack of sleep, and little time for all this to sink in.

"These are things that don't happen to ordinary people," Immelman said.

All because he did something extraordinary.

Not since Seve Ballesteros in 1980 had a player put his name atop the leaderboard after the first round and stayed there over four days at Augusta National, a course where Immelman correctly noted that there's "a disaster around every corner."

He became the first South African to win the Masters since Gary Player, his idol and inspiration, 30 years earlier.

And he joined Tiger Woods, Jim Furyk, David Duval and Vijay Singh as the players to win a major by three shots in the last 10 years.

"That's pretty hefty company," Immelman said. "It will take some time before that sinks in."

Until his Masters victory, Immelman said his greatest golfing achievement had been winning the Nedbank Challenge four months ago in South Africa, an event he regards one notch below the majors.

That celebration wasn't quite like this one. Immelman wasn't getting a whirlwind tour of New York, rather he was in a hospital listening to doctors explain that the pain he felt in his rib cage turned out to be a tumor in his diaphragm.

Within a week, he was having his back cut open to remove the lump, and only later did he learn it was benign.

"Since I was a young boy, very deep down I felt I was good enough to win a major," Immelman said. "As crazy a game as golf is, you go through periods where you doubt yourself. After the surgery, I pretty much had to start at level one and build my game up again. It was unbelievable timing to find my form last week."