Former Russian women's biathlon coach Vladimir Korolkevich has claimed Olga Zaitseva’s lower than expected individual results at Sochi 2014 suggest she was not doping following the Court of Arbitration for Sport (CAS) decision to uphold her disqualification.
Zaitseva last week saw a CAS panel uphold an International Olympic Committee (IOC) Disciplinary Commission decision from 2017, based on evidence provided by whistleblower Grigory Rodchenkov.
The panel agreed with the IOC that Zaitseva should be disqualified from Sochi 2014 for committing an anti-doping rule violation, which means Russia will be stripped of the medal the country won in the 4x6 kilometres relay event at the Games.
Zaisteva's relay team-mates Olga Vilukhina and Yana Romanova were successful in their appeals to CAS, however, and have had their individual results from Sochi 2014 - including Vilukhina's silver medal in the 7.5km - reinstated.
Life bans handed to the trio were all overturned by CAS.
Zaitseva placed 11th in the pursuit at Sochi 2014, as well as 15th in the individual event, 23rd in the mass start and 28th in the sprint.
Korolkevich has claimed her results suggest she was not involved in doping.
"The girls passed all the tests during the season and in previous years, there were no complaints about Olga Zaitseva," Korolkevich told Russia's official state news agency TASS.
"The ambiguity arose only with the Olympic Games, it should have affected them.
"However, she did not show anything outstanding at that time.
"She began to perform splendidly after the Olympics, when she became the winner of the World Cup stages."
Zaitseva last week vowed to appeal the "political" CAS decision to confirm her Sochi 2014 disqualification to the Swiss Federal Tribunal.
The Tribunal only intervenes based on potential procedural issues and on human rights, and will not make a judgement on the CAS panel's interpretation of the law.
The trio of biathletes appealed to the CAS following sanctions by the IOC Disciplinary Commission, handed down for their alleged involvement in Russia's state-sponsored doping scheme.
It followed evidence from the McLaren Report, as well as subsequent investigations by IOC Commissions.
The IOC's Oswald Commission decision on Zaitseva was also one of the stronger verdicts delivered and claimed she was a knowing participant in the state-sponsored doping scheme.
Lawyers representing biathletes Zaisteva, Vilukhina and Romanova have said they have lodged criminal complaints with the Swiss prosecutors office over alleged fake signatures by whistleblower Grigory Rodchenkov.
Rodchenkov's lawyer Jim Walden said in March that the signatures were genuine.
The IOC said it provided a notarised statement from Rodchenkov to CAS in March to confirm the authenticity of the affidavits.
The IOC added it has not been contacted by the public prosecutor over the forgery allegations.