Legkov and Belov were among six Russian skiers to be suspended by the International Ski Federation (FIS) in December after being linked to doping manipulations at Sochi 2014, which were mentioned in the McLaren Report.

Julia Ivanova, Evgenia Shapovalova, Alexey Petukhov and Maxim Vylegzhanin were also suspended.

Along with the appeals of Legkov and Belov, CAS will also hear from Petukhov, Shapovalova and Vylegzhanin on Monday (May 15).

An appeal to have the provisional suspensions overturned was dismissed by the FIS Doping Panel in January, leading to cases being filed with CAS.

Christof Wieschemann, a German lawyer representing Legkov and Belov, has claimed that evidence about the duo in the McLaren Report was "inconsistent".

He claims there are a “number of errors in the documents provided by Prof McLaren”, stating this is not a defect with the report, but because the International Olympic Committee (IOC) and sport federations are using it for a purpose it was not intended for.

Wieschemann argues that proof against individual athletes cannot be determined by the documents.

“In the period between January 2010 and the 2014 Olympic Games, Alexander Legkov spent almost 150 doping samples, which were almost with mere some exception analysed in Western European doping laboratories,” Wieschemann stated.

“Only in the period immediately before the Games are 13 negative analyses from Europe, which were checked at such short intervals that a taking of high-performance substances between the times of the sampling is excluded from the medical point of view.

“Before and during the Games Alexander Legkov was not doped, which also applies to Evgeniy Belov.

“The accusation is, however, that some of the sample bottles with the urine of the athlete show traces, which indicate an impermissible opening and reclosure, whereby the athletes themselves by no means made these manipulations themselves.

“The action of third persons, especially Dr Rodchenkov, is to be attributed to the athletes, although every reference or proof of the connection is missing.

“Only the narrative of Dr Rodchenkov remains, which, however, is not available for cross-examination and whose credibility is subject to the greatest doubt.”

Legkov won the Olympic 50 kilometres freestyle event on home snow at Sochi 2014 and was a member of the silver medal winning 4x10km relay quartet.

Belov's best finish at Sochi 2014 was 18th in the skiathlon event, with Russia's home Games embroiled by allegations of a state-sponsored sample manipulation scheme.

The appeals of Shapovalova, Petukhov and Vylegzhanin will also be held on May 15.

Petukhov won Olympic bronze in the team sprint at Vancouver 2010.

Vylegzhanin won three silver medals at the Sochi 2014 Olympic Games, in the team sprint, the 50km freestyle and the 4x10km relay.

In January, it was reported that Vylegzhanin could face the prospect of an extended ban, after allegedly competing while still suspended.