Anna Kournikova

Anna Kournikova will not be returning to The Biggest Loser next season, TVGuide.com has confirmed.  

"I enjoyed my time on the Biggest Loser ranch," Kournikova said in a statement to The Hollywood Reporter, who was first to report the exit. "Although I will not be returning as a full-time trainer on Season 13, I will always be a part of The Biggest Loser family and my commitment to bettering lives through health and fitness will continue."

Read Dolvett Quince's Biggest Loser blogs for TVGuide.com

NBC didn't immediately respond to TVGuide.com's request for comment.

The 30-year-old tennis pro joined the NBC weight-loss show along with Dolvett Quince to fill the void when trainer Jillian Michaels exited after Season 11. Before the full-time gig, she visited the ranch to lead a tennis-themed challenge in Season 10.