There is a growing sense among former and current players that Serena Williams will actually come back to tennis and former player Haas believes it as well.
The German was a big name in his time as well and he knows Williams personally. They played at the same time and interacted off the court plenty of times. Due to that shared experience with Williams, Haas believes she will stage a comeback.
"Serena had an incredible, long and strong career," said Haas to Eurosport Germany. "But I have the feeling that she is going to come back and say, 'I'm going to play one more time'. She came so close to playing really well again and going far, so I think deep down it really annoys her."
"She might really be thinking about whether she wants to try again. I may be wrong because I'm not that close [to her]," added Haas who concluded with:
"It will mostly depend on how it looks mentally, how she feels physically and whether she has the desire to torture herself like that again after achieving so much. Serena also does a lot of things off the court and is a mother."