After enduring a stressful and drawn-out public custody battle with his ex, Britney Spears, Southern California’s 5.4 earthquake on Tuesday wasn’t enough to shake Kevin Federline!

The father of two was one of several celebs who participated in The Sheckler Foundation Golf Tournament at Trump National Golf Course in Palos Verdes, which donates funds to various charities.

The quake was centered far enough away that it didn’t affect tee-off , but phone service was down for a while, prompting K-Fed to fiddle with his I-Phone, presumably to check up on his two toddlers, Sean Preston and Jayden James.

But then it was off to play golf. Celebs included Brody Jenner, Verne Troyer, Kendra Wilkinson and soccer great Mia Hamm. Federline warmed up at the driving range with Josh Kelley, before joining his two best friends on the course.

OK! caught up with Kevin where he told us how he and the kids are doing.

"I’m happy, everybody’s good. I can’t complain," he told OK!. K-Fed, who said playing golf is "definitely a stress reliever" said he usually plays with his dad and his best friends.

"[Golf] is a place where you can leisure in or you can do business. That’s what I love about it," he said.

As for his own business ventures, Kevin told OK!, "I have a lot of good things going on but I’m not ready to talk about it. I’m still listening to hip-hop, that’s my foundation, but I listen to everybody. We’ll have to wait and see."

By Jon Warech

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