This is an advertisement for Top Spin 4 that 2K Sports seemingly never wanted us to see. It features tennis star Serena Williams and an actress named Rileah Venderbilt striking provocative poses and swinging PlayStation Move controllers while Top Spin 4 plays on televisions.
It's actually a pretty good ad, all things considered. There's a tongue-in-cheek humor to it, with Williams teasing about the "fantasy" aspect at the end. The overtly sexualized nature would make it a no-go for TV in the US but it's perfect for a viral video, something probably not lost on Vanderbilt when she decided to upload it to YouTube without 2K Sports' consent.
In a statement to Joystiq, the publisher says that the racy ad was one of a "variety of creative avenues" they pursued in their marketing plans but that it was, "not part of the title's final marketing campaign."