After the couple were spotted together last month, a source has confirmed Kate Hudson and baseball star Alex Rodriguez are dating.
The actress followed the New York Yankees player - nicknamed A-Rod - when he went on the road with his team late last month to play the Texas Rangers.
Along with her five-year-old son Ryder, whose dad is musician Chris Robinson, Kate stayed in the same hotel as the sportsman, where they "worked out together in the fitness centre", an eye witness told People magazine.
"It's somewhat serious," the source told the US magazine. "He introduced her to a bunch of his friends."
Following the end of his marriage in July last year Alex has been romantically linked to Madonna, while Kate has dated actor Owen Wilson and cyclist Lance Armstrong since parting ways with Black Crowes front man Chris in October 2007.
Photo: ę Rex, Alpha