Roush Fenway Racing teammates Greg Biffle, Carl Edwards and Matt Kenseth all have a lot in common.

They each have won 16 or more Sprint Cup races. They each are perennial championship contenders. And they’ve each been with Roush their entire NASCAR careers.

Now the three of them have something else in common – their wives are all expecting babies this year.

Team owner Jack Roush revealed the news during a news conference during the Sprint Media Tour Thursday, much to the surprise of the three drivers.

“I’m OK with it, but I didn’t know that he was going to do that,” Biffle said.

“I couldn’t hold back,” Roush said. “Maybe I wasn’t supposed to do that.”

Edwards’ wife, Kate, gave birth to their first child last year while Matt and Katie Kenseth welcomed their first in 2009. This will be the first for Greg and Nicole Biffle.

Their pregnancies continue what has been a baby boom in recent years for NASCAR’s Sprint Cup Series. The wives of eight drivers – Edwards, Jeff Gordon, Jimmie Johnson, Juan Pablo Montoya, Ryan Newman, Sam Hornish Jr., Jamie McMurray and Elliott Sadler – all had babies last season.

Now Biffle, 41, joins the fold. He and his wife planned to find out the gender of the baby Wednesday afternoon following the meeting with the media.

“I’m as nervous as can be for the next four hours,” Biffle said at the Roush Fenway complex around noon. “As soon as I’m done, I’m going to Target or wherever, the closest store, and I’m either buying a fishing rod or a Barbie doll.”

Four hours later, Biffle tweeted the results of the ultrasound.

“It’s a girl!!!!” he tweeted. “Barbie doll not a fishing rod.”

Kenseth’s baby is due in late February, Biffle’s on July 10.

“We have babies by races,” Biffle said. “I’m having a Daytona baby. Matt’s having a Phoenix baby.”

Since this is his first child, Biffle said he already is anxious about the due date and what he will do if Nicole goes into labor while he’s at the race track.

“I don’t have any children, and there is a lot to be said for being there when your child is born,” he said. “But we can’t control everything.

“If you think about it, there are lots and lots of people, and the first ones who come to mind are the soldiers who defend our freedom, none of those guys have the opportunity [to be there when their child is born]. They are working for us.

“There is part of me that says that the car is very, very important for me to be in there driving it. But on the other hand, my family is very, very important to me, too. So it will be a very, very difficult decision. Hopefully, it doesn’t come down to that.

“It’s hit and miss. You could be expecting and you just don’t know. What if you are buckling in and you find out or what if you are already in the car or you are on lap 50. How is that going to work? I just have never thought about that. I don’t know. It’s kind of a crazy decision to think about.”

Roush is excited to be adding more babies to the Roush family.

“I’m excited about it, absolutely,” he said. “One of the things that it’s going to do for a driver that’s having a baby when he’s 40 years old, with the idea of having even more than that after he has the first one, there’s a necessity there for an income stream that’s going to make the livelihood of them staying in this business driving a race car longer than it might if they were on their own.”