Caroline Wozniacki has developed friendships with many players on tour, and has hinted that Agnieszka Radwasnka is engaged.

As for rumors about her possibly retiring, however, she refused to discuss the matter.

The 26-year-old beat Anastasija Sevastova in the U.S. Open quarterfinals, and will play Angelique Kerber for a spot in the final on Thursday.

Wozniacki, reminded of a vacation photo taken with Radwanska and Kerber a few years ago, said the players were still friendly.

"I think the great thing about our little group of people is that we have kind of hung out together for years and years now,” she said. “And [it] doesn't matter who is No. 1 or who is lower ranked, or who is beating who. We would still go on vacations. But the problem is like, you know, Aga is getting married. So then all of a sudden we're like, we just want a girls trip. But it's tough when everyone has their own thing."

Radwanska, who has been dating hitting partner Dawid Celt, has not officially announced an engagement.

Though she said that the group was "just a little bit more busy now," Wozniacki noted that she invited Kerber to spend some time with her during the offseason.

"I was like, ‘Part of my offseason I will be in New York.’” she said. “I'll be somewhere else. If you want to join, you're more than welcome."

But on the subject of a potential retirement, Wozniacki deflected questions.

“I don't really want to talk about that now,” she said. “When I feel ready to open up and say something, then I will."

Piotr Wozniacki, Caroline’s father than coach, told Danish newspaper Ekstra Bladet that his daughter is contemplating hanging up her racquets.

"I don't know if Caroline will only play till the rest of the season, or play another," he said, adding that no decision had been made. "I agree she should stop while she is still fresh and do new things."

Wozniacki is a two-time finalist at Flushing Meadows.