4 tennis players and their famous pets

#2 Andy Roddick

Andy Roddick with Billie Jean King and his dog named after the legend

Retired American tennis star Andy Roddick is an out-and-out dog lover. He even spearheads a campaign called "Call for Incredible" which is a stage to demonstrate dogs' athletic abilities in Olympic style events.

"I've been a dog person my entire life. I grew up with dogs. My mother-in-law rescues dogs. We (Roddick, wife Brooklyn Decker and young son Hank) have two English Bulldogs. Their names are Billie Jean and Bob Costas," said Andy in a recent interview.

"Billie Jean, the dog, was named after Billie Jean King. She knows about it and asks for photos all the time," Roddick said of the famous tennis star of yesteryear. "With Bob Costas, I think simple human names for dogs is kind of funny. I also think it's funny for dogs to have first and last names. So when the vet calls, they say, 'Bob Costas' is ready to be picked up.' That's just funny to me," said Roddick referring to his second dog.