Isle of Man's Jessica Li was forced to retire during her game against India's Saina Nehwal earlier.
The 20-year-old suffered an injury to her right ankle at the end of first set, which forced her to concede the match at 21-3, 2-0.
Jessica's brother Benjamin Li told Energy FM: "It is tough to watch. You don't wish that on anybody and especially your sister. It is probably the biggest match of her life, it's just a shame it had to happen."
Saina Nehwal said: "The last point was really tricky because I didn't know (what had happened). Yes she fell, but I didn't know if it was bad, ankles are delicate.
"It definitely will be a tough injury for her. It's the Commonwealth Games and we all wish to play. But, a match is a match. She tried her best."
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