MOSCOW, Russia (AFP) — The legal battle to compete in next month’s Olympics began Monday as Russian swimmer Yulia Efimova was the first to appeal her exclusion from the Rio Games by swimming body FINA, acting on criteria set out by the International Olympic Committee (IOC).

The IOC on Sunday declined to impose a blanket ban on Russian competitors over state-run doping, a decision which was met with fierce criticism elsewhere with Olympic chiefs branded “spineless”.

In one of the most momentous moves in its long, chequered history, the IOC said it was up to each international sports federation to decide if Russians could take part in Rio.

Swimming governing body FINA on Monday announced a ban on seven Russian swimmers, making it the first international federation to impose sanctions in light of Sunday’s IOC decision.

Vladimir Morozov and Nikita Lobintsev, both 4x100m freestyle bronze-medal winners with the Russian team at the 2012 Olympics, and Efimova, another 2012 Olympic bronze medallist, were among the seven banned.

Efimova, 24, a four-time world breaststroke champion, whose provisional ban for testing positive for meldonium was overturned by FINA in May, will appeal to the Court of Arbitration for Sport (CAS), her agent Andrei Mitkov told R-Sport.

Officially ten Russian competitors were sidelined from the Rio Games on Monday over past doping offences with two weightlifters and a freestyle wrestler also banned, joining the 67 track and field athletes already barred from international competition by the International Association of Athletics Federation (IAAF).

Other international federations now face a race against the clock with the opening ceremony only 11 days away, global sport sharply divided and some Russian competitors already in Brazil.

Kremlin spokesman Dmitry Peskov called the IOC decision “positive”.

“We welcome the main decision, which allows so-called clean athletes to take part in the Olympic Games,” Peskov told reporters.

Russian sport and the Kremlin have been rocked by doping scandals that saw its track and field team banned from competition, including Rio, and sparked calls led by the World Anti-Doping Agency (WADA) for all Russians to be barred until they cleaned up.

Dmitry Svishchev, who heads the lower house of Russian parliament’s sports and physical culture committee, told AFP the IOC decision was “not bad”.

Most Russian competitors will fly out on Thursday, although it remains to be seen how many will actually take part in the Games.

Russia’s reaction was in stark contrast to much of the rest of the world.

Olympic chiefs had been under pressure to hit Russia with the hardest sanctions possible to punish state-run doping that was laid bare in a WADA-commissioned report a week ago by Canadian law professor Richard McLaren.

It revealed wide-ranging Russian doping in Olympic events from 2011 and including the Sochi Games in 2014, where the secret service used a hole drilled in a wall to swap the dirty samples of doping competitors for clean ones, under the noses of international observers.

The Australian government warned that a “suspicion of compromised integrity” now hung over the Games and New Zealand’s anti-doping body lamented “a black day for clean athletes”.

That came after WADA president Craig Reedie said: “The McLaren report exposed, beyond a reasonable doubt, a state-run doping programme in Russia that seriously undermines the principles of clean sport embodied within the World Anti-Doping Code.”

US anti-doping chiefs blasted the IOC for creating “a confusing mess”.