Maria Sharapova
A world-class athlete, Maria Sharapova is tennis royalty. At 33, she's retired but still working in the tennis realm. She's had relationships with fellow tennis stars, but none of them have impressed her enough to stick around.
Lindsey Vonn
Lindsey Vonn is a popular athlete who was thrust into the spotlight for her relationship with golf legend Tiger Woods. She was recently in a relationship with Kenan Smith but has since stayed single to focus on her career. Her next goal? The Olympics.