The world of US sport has been left stunned by a string of scandals after hundreds of elite athletes came forward to reveal they were sexually abused by coaches, senior team members or doctors when they were children.

A recent child abuse row in US hockey has become the latest ugly twist in a lengthy saga which has undermined the credibility of youth sport in the country.

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USA Hockey President Jim Smith has reportedly been under investigation amid claims that he mishandled sexual abuse allegations in the Amateur Hockey Association of Illinois (AHAI).

Longtime AHAI coach Tom Adrahtas has been accused of abusing several junior players in the 1980s, when Smith was serving as AHAI president.

BREAKING: USA Hockey President Jim Smith under investigation for handling of abuse allegations

Smith denied all accusations, insisting that “there were no reports alleging misconduct by Tom Adrahtas.”

What is going on with US sport, which has been riddled with sex scandals?

The world sports powerhouse has been shaken by new details and accusations surfacing on a regular basis, with former athletes revealing darker sides to their seemingly successful sporting careers.

The snowball started with the USA women’s artistic gymnastics squad, after Olympic and world champions, inspired by the #MeToo campaign, came forward one-by-one to speak about sexual abuse they suffered at the hands of the team’s doctor Larry Nassar.

Olympic gold medalist McKayla Maroney said she was systematically molested by Nassar while performing for the national team, emphasizing that US sports officials were aware of his sex crimes and paid her “hush money” to cover up the scandal.

After Maroney spoke out, the majority of the US women’s team, including world leader Simone Biles, came forward to reveal they were also victims of the disgraced doctor.

The scandal dropped a bombshell on US sport, with Nassar being sentenced to 175 years in prison.

The next sport affected by sex scandals was figure skating, after US Senator Richard Blumenthal called on his colleagues to make immediate changes in the sport, which he said has suffered from a long-lasting “culture of sexual abuse.”

The row escalated after several skaters accused John Coughlin, an American pair skater champion, of sexual abuse. A day after his interim suspension and one week before the US Championships, Coughlin died by suicide at the age of 33.

Last year, USA Swimming was investigated for allegedly stifling athletes’ sexual abuse claims.

After the Pandora’s box was opened, accusations and lawsuits against US sports officials poured in, raising questions about whether it was safe to send kids to sports clubs.

When asked why they had kept silent for so many years, former athletes said they were afraid of not being heard or believed, knowing that their coaches had more power and ties.

Some of them, including Maroney, revealed that their complaints were simply ignored by adults, who allowed Nassar to go unpunished for more than 30 years.

It remains unknown how many scandals will be revealed, but US sport in numerous areas will need to restore its reputation by making guarantees to parents that children will not be preyed upon by coaches.