Tennis superstar Serena Williams' new Wii, PlayStation 3 and Xbox 360 game Top Spin 4 is going to be released this spring, but this 57 second ad won't be appearing on TV any time soon...

Williams and actress Rileah Vanderbilt pretend to battle it out on the tennis court as clips from the game play in the background, but after listening to the grunts and getting an eyeful of their sexy workout wear, it's easy to see why parent company 2K Sports isn't planning on using this as an official ad. "As part of the process for creating marketing campaigns to support our titles, we pursue a variety of creative avenues," 2K Sports said in a statement. "This video is not part of the title's final marketing campaign and its distribution was unauthorized."

Vanderbilt uploaded this video on YouTube earlier this week and Williams told her fans to "Stay tuned for a awesomely sexy video I am tweeting later," but it seems as though that's when 2k Sports pulled the plug on the ad, because no one has mentioned it since then!