Rio Olympic Games silver medallist Madeline Groves is one of three Australian swimmers facing a two-year ban for missing mandatory drug tests.

Groves, Rio Olympic open water swimmer Jarrod Poort and two-time Olympian Thomas Fraser-Holmes face suspensions from all competitions for missing three drug tests in a 12-month period.

Swimming Australia released a statement on Sunday, confirming members of the Dolphins team had failed to update their locations to drug testers.

“Under ASADA and FINA rules, Swimming Australia is unable to announce details on any individual swimmers who may have failed to update their whereabouts appropriately until ASADA and FINA have completed their process,” the statement said.

The trio represent some of the most promising talent in Australian swimming.

Butterfly specialist Groves took the silver in the 200 metre event in Rio, while Fraser-Holmes missed out on a medal when the 800 metre freestyle relay team was pipped for the bronze.

Poort swam the 10k open water race in Rio and opened an enormous lead  before fading badly and being caught by the field in the last lap.

Groves was cited for a missed test in San Diego, where drug testers could not find her at the address where she told them she would be available.

Fraser-Holmes blamed absent-mindedness, saying that he had been visiting his mother when he realised he had mostly missed the 8-9 p.m. appointment. By the time he returned home, the testers had come and gone.

Mark Anderson, the chief executive of Swimming Australia, expressed his disappointment at the situation.

“Part of that professionalism is ensuring each athlete is accountable and responsible for accurately providing their locations so testers can access them when required. It is extremely disappointing if this has not occurred as it should,” Anderson said in a statement.

“Both Swimming Australia and our athletes have been very clear on our position in relation to anti-doping both here in Australia and internationally,” Anderson said in a statement.
— with AAP