Felix Auger-Aliassime spoke with media briefly after seeing doctors on Monday in New York, and briefed them on his condition.
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The Canadian was forced to retire during the third-set of his first U.S. Open main draw match, when an elevated heart rate and dizziness got the best of him.
“After the second set I started feeling some fast heart rates and palpitations, something I’ve experience before,” the 18-year-old said. “We’re not quite sure of the reason yet but we’ll look deeper into that.”
Auger-Aliassime tried to continue, but he said it became impossible after a while.
“I was hoping it would go down after a while, so I could finish the match, but it was impossible for me to keep going, with signs of dizziness and everything. The best decision was to stop right there."
On Tuesday CBC reporter Devon Heroux tracked down Tennis Canada for a statement on Auger-Aliassime's condition. "He will be coming back to Montreal and will take a few days off before he starts training again. He needs to sit down with his team to decide on his tournament schedule for the rest of the year," Tennis Canada told Heroux an email. "He will need to investigate deeper with his medical team."