She had been hospitalised in Florida the last few weeks after a fall, said her lawyer Sonia Pawluc.

Wright joined the LPGA in 1955 and the Hall of Famer's 82 wins place her second on the all-time list behind Kathy Whitworth, who won 88. The Associated Press in 1999 named Wright the Female Golfer of the Century and Female Athlete of the Year in 1963 and 1964.

A Golf Magazine poll of experts in 2009 called her the best female golfer ever, and men's champions Ben Hogan and Byron Nelson said Wright had the best swing they ever saw.

Mary Kathryn Wright was born in San Diego on February 14, 1935. She started playing golf seriously at age 11 and in 1952 at 17 won the USGA Girls' Junior Championship. In 1954, she won the World Amateur.

She studied psychology for a year at Stanford before dropping out in 1955 to pursue a professional golf career.

"I've earned my own version of a master's degree in psychology in study and experience, trial and error, on golf courses throughout the United States. For psychology ... is as integral a part of good golf as an efficient swing," she said, according to the World Golf Hall of Fame. She was inducted in 1976.

Her first tournament win came in 1956 in Jacksonville, Florida, and by 1961 she was dominating the tour, winning at least 10 tournaments annually from 1961 to 1964. Among her major wins were four US Opens and four LPGA Championships.

Wright retired from the tour in 1969 because of foot issues and burnout: she was the biggest draw on the LPGA Tour and played constantly to help it thrive.

"The pressure was so great," Whitworth said about her friend and rival, according to the Hall of Fame. "Sponsors threatened to cancel their tournaments if she didn't play. And, knowing that if they cancelled, the rest of us wouldn't be able to play, Mickey would always play."

Her last tournament and major victory came four years after leaving the tour, the 1973 Colgate-Dinah Shore Winner's Circle.

Wright moved to Stuart, Florida, in 1974, where she lived the rest of her life. She survived breast cancer in 2007.

The Stuart News in 2012 said Wright spent most days gardening, fishing and playing the stock market and crossword puzzles. For golf, she hit wedges off a practice mat on her patio onto the 14th fairway of an adjoining club.

When she donated 200 items to the United States Golf Association in 2012, she said she hated giving up that mat. The course ranger gave her a new one.

Australian Associated Press