Coming up this evening at 9 p.m., Piers Morgan laces up his tennis shoes, and volleys with women's great Serena Williams.
A 13-time Grand Slam Singles champion, Serena has also teamed with her sister Venus Williams to win 12 Grand Slam Doubles titles. And though the Williams sisters have met head-to-head 23 times professionally, Serena prefers to see her older sibling on the same side of the net:
"I hate playing against her. Sometimes we practice against her and she's amazing to practice against. But then I get competitive a little bit," reveals the 30-year-old. "Like the other day we were practicing together, and I was serving against her, and she was hitting winners, and I was so mad."
Pressured by the host to predict the winner in a life or limb battle, Serena reluctantly declares victory:
"I can't say I would lose," she tells Morgan. "I'm really, really ruthless out on the court, but so is Venus. So, I don't know. I can't sit here and say she would win. So I would say I would win. But I'm sure if she were sitting here she would say she would win."
Watch the clip, and listen to the interview, then tune in this evening at 9 p.m., as the most recent player to hold all four Grand Slam singles titles simultaneously, shows Morgan what it means to be "properly in love" on the tennis court.