World Rowing has taken the hardest stance with Russia since athletics ahead of the Rio Olympics, banning 22 of the nation's 28 rowers from competing.
With a blanket ban on all track and field athletes in the wake of the country's recently-uncovered, state-run doping programme, individual sports have been making decisions on participation after they were given the freedom to do so by the International Olympic Committee.
Russia were given a boost on Tuesday when the governing bodies for judo, shooting and sailing waved some athletes through, but the banning of 22 rowers - effectively four boats - is damning.
In revealing its judgement, World Rowing (FISA) said that those banned were "not at all considered to have participated in doping" but were not being allowed in as they "do not meet the conditions established by the IOC in their decision of 24 July 2016 for participation in the Rio 2016 Olympic Games".
Effectively, the rowers have been blocked because they have not been tested enough times out of Russia.
As such, only Aleksandr Chaukin, Georgy Efremenko, Artem Kosov, Nikita Morgachev, Vladislav Ryabcev and Anton Zarutskiy will be permitted to take to the water, with the lightweight men's four, lightweight women's double sculls and men's and women's eights withdrawn.
The places will instead be given to Greece (men's four), Italy (women's sculls) and Australia and Italy (women's and men's eight).
World Rowing's statement continued: "Russia has the possibility to form a men's four (M4-) with the eligible six rowers for competition in Rio 2016. We await the Russian Rowing Federation's decision on this possibility."
The news came after Russia had received a boost from judo and shooting.
In a statement, the executive committee of the International Shooting Sport Federation said none of Russia's 18 proposed competitors appeared in Richard McLaren's damning report into the Russian doping scandal or had previously served bans.
And a spokesperson for International Judo Federation (IJF) president Marius Vizer told Press Association Sport that the federation had written to the IOC to say all 11 of Russia's proposed team should be considered eligible.
Russia won only one bronze medal in the shooting at London 2012 but claimed three golds, a silver and a bronze in judo. They were the first Olympic judo gold medals the country had ever won.
Russian President Vladimir Putin is the IJF's honorary president.
There was no word on the identities of the Russian judokas responsible for the eight manipulated drugs tests uncovered by McLaren.
Earlier, the International Canoe Federation (ICF) ruled five sprint canoeists - Elena Aniushina, Alexander Dyachenko, Alexey Korovashkov, Andrey Kraitor and Natalia Podolskaia - ineligible but stopped short of issuing a federation-wide ban.
ICF secretary general Simon Toulson said: "This is a bitter blow for the Olympic movement and we are saddened that our sport is implicated.
"We have taken swift action and removed all offending athletes where doping evidence exists."
Dyachenko won the men's K2 gold medal at London 2012 along with his team-mate Iurii Postrigai, who will also miss out on Rio although he was not implicated in the report.
The ICF, however, had been expected to crack down even harder having issued one-year bans to Belarus and Romania earlier this month for repeated doping violations.
World Sailing blocked the eligibility of Pavel Sozykin, an athlete in the two-man 470 class who was implicated in the McLaren report, but Russia will be allowed to call up a reserve.
The rest of the team have been cleared to compete, subject to extra testing and Court of Arbitration for Sport approval.
While each sport works out what to do about Russia, the umbrella group that represents their interests, the Association of Summer Olympic International Federations, fired an extraordinary broadside at those who have criticised the Olympic movement's handling of the crisis.
In a clear reference to the likes of ex-WADA presidents John Fahey and Dick Pound, current WADA boss Sir Craig Reedie and the leaders of national anti-doping agencies such as American Travis Tygart, an ASOIF statement said McLaren's report raised "huge concerns" but does not mean sport takes doping lightly.
"ASOIF regrets the way the Russian case has been treated by important voices, both inside and outside the Olympic movement, which have attempted to give priority to media exposure and political influence while disrespecting the existing roles and responsibilities and disregarding the timing and impact on the preparation of the Rio Games," it said.
"This does not mean ASOIF takes this issue any less seriously than any of our counterparts as there is no room for any doping in sport whatsoever."
A number of sports are yet to declare their position with regard to Russian athletes, although only weightlifting is likely to follow athletics' example and issue a team ban.
United World Wrestling said on Tuesday it had requested more information regarding wrestlers said to be involved in the "disappearing positive tests" scheme identified by McLaren.
The International Handball Federation has written to the Russian federation to ask for the whereabouts of the women's team to enable immediate testing, while boxing and gymnastics are among those who have told Press Association Sport they are assessing matters.
Archery, equestrian and tennis were quick out of the blocks in confirming the eligibility of the Russian entries.
Modern pentathlon has declared Ilia Frolov and Maksim Kustov ineligible because they appear in McLaren's report.
Frolov was only a reserve for the team but Kustov's place will now go to Ruslan Nakonechnyi of Latvia. The three remaining members of Russia's team, including top-ranked Alexander Lesun, have been cleared to compete.
Russia initially selected 387 athletes for Rio, approximately 50 fewer than recent summer Games', but has already lost almost 90 of those in the individual vetting process that each sport is now undertaking.
The Olympics start in Rio on August 5 and finish on August 21.