Caroline Wozniacki reportedly dating NBA player David Lee

Caroline Wozniacki is dating NBA player David Lee, according to her brother, Patrik, and also appears to have added Sascha Bajin as a hitting partner.

The 33-year-old Lee attended a Wozniacki match at the U.S. Open, increasing rumors of a romance between the pair, but her brother told Ekstra Bladet that Wozniacki did not confirm the relationship to him until the beginning of the year.

"It's quite new to me," Patrik told the Danish newspaper. "I think it's really good … He is a clever guy, also considerate … And he is obviously very athletic as a professional basketball player."

Wozniacki has not publicly announced that she is dating Lee, who plays for the San Antonio Spurs.

Wozniacki's new hitting partner, Bajin, was also just revealed. He sat in her box during her first-round match in Doha.

He was the longtime hitting partner of Serena Williams before switching to Victoria Azarenka two years ago. Wozniacki recently said she would not be looking for an external coach, preferring to keep working with her father, Piotr. The world No. 18 will now have another experienced member on her team.

Wozniacki’s first-round match against Kiki Bertens in Doha was suspended by rain on Tuesday. They’re tied 2-2 in the first set.