US Open defending champion Naomi Osaka lost her third-round match to Canada’s teen Leylah Fernandez in three sets 5-7 7-6 (7-2) 6-4.
Osaka missed Wimbledon before returning to the sport at the Tokyo Olympics, where she lit the flame at the opening ceremony.
She said in a post-match news conference,”I feel like I’m kind of at this point where I’m trying to figure out what I want to do.
“I honestly don’t know when I’m going to play my next tennis match. I think I’m going to take a break from playing for a while.
“I feel like for me recently, when I win I don’t feel happy. I feel more like a relief. And then when I lose, I feel very sad. I don’t think that’s normal.”
Three days before her 19th birthday, 18-year-old Fernandez battled back to deliver a stunning upset of the world number three from Japan.
Fernandez said, “From a very young age, I knew I was able to beat anyone who is in front of me.
“I’ve always had that belief. I’ve always tried to use that in every match.
“I guess today that belief came true.
“I was very happy how I played in the first set. In the break I was telling myself to stay positive, keep fighting. ‘I’m there. I’m close,’” she added.
Fernandez, who turns 19 on Monday, will now face the 2016 champion Angelique Kerber for a place in the quarter-finals.