US federal auditors probing Phil Mickelson’s role in an insider trading case found he had gambling losses of more than USD40 million (approx Rs 307crore) from 2010 to 2014, according to an excerpt from Alan Shipnuck’s forthcoming biography of the US golfer. Shipnuck posted the excerpt from the unauthorized biography on the Firepit Collective website on Thursday.

The book, Phil: The Rip-Roaring  (and Unauthorized!) Biography of Golf’s Most Colorful Superstar, is due to be released on May 17. That’s two days before the start of the PGA Championship, where Mickelson is the defending champion.