... Phil Mickelson, has been diagnosed with breast cancer and will begin treatment. Phil Mickelson will suspend his playing schedule indefinitely. Tests will continue and treatment is expected to begin with “major surgery” within two weeks, according to an announcement from Gaylord Sports, Mickelson’s management firm.Mickelson, the No. 2-ranked golfer in the world, withdrew from the H.P. Byron Nelson Championship in Dallas, where he was scheduled to begin a two-week run, including a title defense at next week’ ...