From a lengthy except posted at Golf Digest:
According to a source with direct access to the documents, Mickelson had gambling losses totaling more than $40 million in the four-year period (2010–14) that were scrutinized. In those prime earning years, his income was estimated to be just north of $40 million a year. That’s an obscene amount of money, but once he paid his taxes (including the California tariffs he publicly railed against), he was left with, what, low-20s? Then he had to cover his plane and mansion(s), plus his agent, caddie, pilots, chef, personal trainer, swing coaches and sundry others. Throw in all the other expenses of a big life—like an actual T. Rex skull for a birthday present—and that leaves, what, $10 million? Per the government audit, that’s roughly how much Mickelson averaged in annual gambling losses. (And we don’t know what we don’t know.) In other words, it’s quite possible he was barely breaking even, or maybe even in the red. And Mickelson’s income dropped considerably during his winless years from 2014 to ’17.
Money was a big factor in Mickelson’s bust-up with his career-long caddie, Jim "Bones" Mackay. They announced their split in June 2017 with chummy matching press releases. At the time, the overriding emotion in golf circles was disbelief. “It felt like your parents were splitting up,” says John Wood, a longtime tour caddie and now an NBC/Golf Channel commentator. The statements made the divorce sound amicable, but that was nonsense. Bones had fired Phil at the ’17 Memorial over a series of simmering grievances (laid out in detail in the book), including hundreds of thousands of dollars in overdue back pay.
In other gambling news:
"Bally’s will commit to 60% minority hiring and will create a jobs program specifically targeting neighborhoods with the highest levels of unemployment and lowest income."Lightfoot: "A Chicago casino will expand on our values of equity and inclusion."
— Kelly Bauer (@BauerJournalism) May 5, 2022