Phil Mickelson has suspended his schedule indefinitely after his wife Amy was diagnosed with breast cancer.
According to a statemtn from his management company, his wife was to have more tests but begin treatment with major surgery as early as the next two weeks.
The world No2 was due to play the Byron Nelson Championship this week before defending his title next week at Colonial. It was not certain if he would return in time for the U.S. Open on June 18-21 at Bethpage Black, or whether he will be at Turnberry for the Open in July.
"Elin and I are deeply saddened to hear the news about Amy," Woods said. "Our thoughts and prayers are with her, Phil, the children and the entire Mickelson family."
Phil met Amy in 1992 when Mickelson was a senior at Arizona State, a year after he won his first PGA Tour event as an amateur. Amy was a cheerleader.
"I grew up in a tennis family, and when he told me he was a pro golfer, I thought he worked in the shop at a golf course," she wrote in Mickelson's book, "One Magical Sunday," after he won his first major at the 2004 Masters.
They were married in 1996 and have three children: Amanda, 9, Sophia, 7, and Evan, 6. Their first child was born the day after the 1999 U.S. Open at Pinehurst No. 2., where Mickelson carried a pager and promised to leave if his wife went into labour.