WHITE SULPHUR SPRINGS, WV - AUGUST 05: Phil Mickelson of the United States looks on at the 5th hole on day two of the LIV Golf Greenbrier at The Old White Course on August 05, 2023 at White Sulphur Springs, West Virginia. (Photo by Joe Robbins/Icon Sportswire via Getty Images)
Golf star Phil Mickelson lost $100 million betting, according to a new book.
  • Phil Mickelson racked up $100 million worth of losses gambling, according to a new book by Billy Walters.
  • The golf star also tried to bet $400,000 on Team USA at the 2012 Ryder Cup, Walters wrote.
  • "I would never undermine the integrity of the game," Mickelson said in response.

Phil Mickelson has bet over $1 billion over the past three decades, racked up $100 million worth of losses, and once considered placing a wager on Team USA winning the Ryder Cup, according to a new book.