FARMINGDALE, N.Y. - Grady O'Hair is about to enter this world. It could happen at almost any time. His father Sean, who turns 27 next month, is having a breakout season on the PGA Tour. His mother Jackie is home in West Chester with her family and the couple's two other children, Molly (4) and Luke (2). Not exactly the way they planned it.

"We actually should have done a better job," O'Hair joked yesterday outside the clubhouse at Bethpage Black, where the 109th U.S. Open begins tomorrow. "It happens when it happens, right?"

Jackie went into the hospital Sunday, suffering from back pain, but is back at the couple's house. It's a waiting game. Sean plays in the afternoon tomorrow and early on Friday. Other than that, he's really not sure of anything.

"She's right there," O'Hair explained. "The first baby was right on time. The second was a week early. They say they always come a little earlier than the one before.

"It's hard. There's so many scenarios, obviously. If I get a phone call, I'm going to try and make it. If I have to withdraw, I'll withdraw. I'd like to be there. I'd like to do both. As long as she's fine ... I don't like being here by myself. They're a very good distraction. It takes my mind off golf. That's great. I'd be lying if I said I wasn't a little stressed out.

"I'd like to play, but that's not the most important thing. I'm just trying to figure it out. It's something I'm not in control of. It's hard to look at it that way. It's kind of hard not letting it distract me."

O'Hair, who is sixth on the money list (with just over $3 million), tied for 10th at the Masters. He had to withdraw from last year's Open after bruising his chest in a one-car automobile accident. He was tied for 26th in his Open debut in 2006, and missed the cut a year later.

"I was looking forward to this tournament," he said. "What I need to do is prepare myself to play the best I can, and deal with it when it comes. If I thought I was going to play bad [anyway], I might as well go home [now]. I feel my game is there. I sure would like to be here Sunday afternoon with a chance. It would be a great story."

And what if he won?

"I'd have to keep the trophy in [Grady's] room," he said. "I feel sorry for my wife. She's scared to death. She's upset there's a good chance I might not be there, even though she has her mom and everyone. That's a big reason we live where we do. We're a pretty tightknit family.

"I called her twice out there [during a practice round]. I just have to take it day by day."

O'Hair's numbers

WORLD GOLF RANKING (THROUGH JUNE 14)

1. Tiger Woods, 10.28

2. Phil Mickelson, 7.99

3. Paul Casey, 7.02

4. Sergio Garcia, 6.42

5. Geoff Ogilvy, 6.20

13. Sean O'Hair, 4.47

2010 RYDER CUP POINTS (TOP 10 QUALIFY)

1. Chad Campbell 660.000

1. Kenny Perry 660.000

3. Phil Mickelson 300.000

4. Steve Flesch 242.813

4. John Merrick 242.813

4. Steve Stricker 242.813

4. Tiger Woods 242.813

8. Sean O'Hair 187.500

8. Jim Furyk 187.500

8. Hunter Mahan 187.500

11. Todd Hamilton 131.250

SCORING AVERAGE

1. Tiger Woods 68.88.

2. David Toms 69.44

3. Brian Gay 69.52

6. Sean O'Hair 69.74

DRIVING DISTANCE

1. Bubba Watson 313.2

2. Robert Garrigus 309.0

3. Dustin Johnson 307.9

61. Sean O'Hair 289.7

DRIVING ACCURACY PERCENTAGE

1. David Toms 74.74

2. Joe Durant 72.64

3. Brian Gay 72.35

61. Sean O'Hair 64.17

GREENS IN REGULATION PERCENTAGE

1. John Senden 71.40

2. Sean O'Hair 71.11

3. Briny Baird 70.65

PUTTING AVERAGE

1. Luke Donald 1.697

2. Geoff Ogilvy 1.710

3. Steve Stricker 1.713

40. Sean O'Hair 1.752

BIRDIE AVERAGE

1. Geoff Ogilvy 4.48

2. Dustin Johnson 4.47

3. Anthony Kim 4.41

4. Sean O'Hair 4.40

ALL-AROUND RANKING

1. Sean O'Hair 252

2. Tim Clark 293

3. Charlie Wi 298

OFFICIAL MONEY LEADERS (STARTS IN PARENTHESES)

1. Geoff Ogilvy (12), $3,319,045.

2. Zach Johnson (15), $3,305,441

3. Phil Mickelson (11), $3,250,731

4. Tiger Woods (7), $3,246,813

5. Steve Stricker (13), $3,117,036

6. Sean O'Hair (13), $3,047,542