He won a bronze medal in the 4 x 5 km team event at the 1999 FIS Nordic World Ski Championships in Ramsau and finished 8th in the 15 km individual at those same championships.

Fadeyev finished 31st in the 15 km individual event at the 2002 Winter Olympics in Salt Lake City.

His best individual career finish was 2nd in a 7.5 km sprint event in Planica, Slovenia in 2001.

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