The classification was created in Soviet Union but even now it is popular in the former Soviet Union republics: Ukraine, Russia, Belarus, Kazakhstan, Kyrgyzstan, Tajikistan, Uzbekistan.

• Elite:

  Elite Sportsman

• IMS:

  International Master of Sports

• MS:

  Master of Sports

• CMS:

  Candidate Master of Sports

• I:

  First Class Sportsman

• II:

  Second Class Sportsman

• III:

  Third Class Sportsman

• I(j):

  Youth First Class Sportsman

• II(j):

  Youth Second Class Sportsman

• III(j):

  Youth Third Class Sportsman

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Junior is a person who is not 18 years old.

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Olympic Champions:

Elite, International Master of Sports, Master of Sports

National Champions:

Master of Sports, Candidate Master of Sports, First Class Sportsman

City-Level Champions:

First Class Sportsman, Second Class Sportsman, Third Class Sportsman, Youth First Class Sportsman

Keep in mind that these comparisons are only intended to serve as a general reference and do not provide an exact equivalence between the different ranking systems.

Source