Mickelson gets another crack at career slam

Phil Mickelson says there is nothing like the prospect of a career grand slam to motivate yourself for a US Open.

Mickelson missed his first crack at a career slam last year, and he heads to the 115th US Open at Chambers Bay ready to shake off the rust of what has been a roller-coaster season so far.

"I have been thinking about it (US Open) quite a bit and trying to get ready the last few months," said the 44-year-old Mickelson, who has a record six runner-up finishes in the US Open.