Mickelson biographer: Phil lost $40M gambling from 2010-14

Phil Mickelson reported gambling losses of more than $40 million from 2010-14, the author of an unauthorized biography on the golfer claims.

Author Alan Shipnuck's upcoming Mickelson book was the source of controversial remarks Mickelson made about Saudi financiers backing a rival golf circuit. Shipnuck released another excerpt adapted from the biography on the Fire Pit Collective website Thursday.

Shipnuck wrote that t