A curly-haired Californian who won a gold medal in water polo during the Rio Olympics underwent surgery Saturday for a deep cut on her leg after she was hurt when a nightclub in South Korea collapsed.

Kaleigh Gilchrist, 27, and three other US water polo players were among 16 people injured by the collapse of the Coyote Ugly club in Gwangju, which killed two South Korean men.

She’s also a pro surfer and has been training with Team USA women’s water polo team for the 2020 Olympics in Japan, as well as for the World Surf League Qualifying Surf Series, according to her Instagram account, where she has also posted numerous photos of the women’s water polo team in competition at Gwanju.

Paige Hauschild and Johnny Hooper suffered lacerations that required stitches, according to a report, while Ben Hallock suffered “minor scrapes on the legs.”

“This is an awful tragedy,” said Christopher Ramsey, CEO of USA Water Polo.

The second floor of club Coyote Ugly collapsed around 2:40 a.m. local time Saturday. Reports estimate that about 370 people were in the club when the incident occurred.

Members of the New Zealand men’s and women’s water polo teams were also present.

Matt Small, the men’s captain, said, “(It was) business as usual and then it literally collapsed beneath our feet,” reported New Zealand Radio Sport.

“None of the boys are hurt or injured though — so that’s good. But everyone’s a bit shaken up at the moment.”

The athletes were participating in the World Swimming championships in the city of Gwangju when the accident occurred at the night club which is adjacent to the athletes’ village.

FINA, the international governing body for aquatic sports, said it was “carefully monitoring the situation.”

Among the injured were athletes from New Zealand, the Netherlands, Italy and Brazil.

The balcony and a staircase loaded with nearly 400 people at the Coyote Ugly nightclub collapsed in the early hours of Saturday morning.

The dead were described as locals involved in the championships. The owner of the club is being investigated by police.