Tiger Woods says the world now knows why he's balding after he rolled back the years to win a fifth Masters trophy at the age of 43.

The veteran golfer had been bereft of major championship victories for 11 years, struck by scandals in his private life, and feared he would struggle to walk, let alone compete, because of four back surgeries.

But Woods stormed back up the world golf rankings and claimed a 15th major championship on Sunday.

He said he has even lost hair because of his tough battle back to the highest echelons of world sport.

"Everyone was playing well, you couldn't have had more drama than what we all had out there," Woods said.

"Now we know why I'm balding… this stuff is hard!"


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