Jason Day

2012 hasn't been as kind to Jason Day as 2011 was but in fairness, he's had a bit on his mind.

Day's wife Ellie is expecting the couple's first child in a month and the distraction of the pregnancy, coupled with an ankle injury which forced him out of the US Masters, has been reflected in his results.

Day revealed earlier today he has a contingency plan in place should Ellie go into labour early and is prepared to leave The Olympic Club on short notice if required.

"We will have planes on hold for an emergency," Day told Ben Everill of AAP.

"If I am doing well at the US Open and for some reason she goes into labour - I don't care about the tournament, I have to be there for the birth.

"It might sound stupid to some people to say if you're leading a major you will just leave but family comes first and I'll do that.

"My family will be there my whole life, golf won't.

"Hopefully the timing works out that there aren't any issues."

Day finished runner-up to Rory McIlroy at Congressional last year and is hopeful of another good result this week.

"I'm not hitting it the greatest. It feels a little cold right now but it's still early in the year and I'm ready to work hard and see how it goes.

"I really want to do well so I hope it all clicks this week."

Day tees off with Louis Oosthuizen and Jason Dufner just before 7am Australian time on Friday.