Russian athlete who is considered the greatest hammer thrower of modern times. He set six world records and won two Olympic gold medals.

Sedykh began competing in the hammer throw in 1968. In 1972 Anatoly Bondarchuk, who had won a hammer throw gold medal in that year's Munich Olympics, became Sedykh's coach. The next year, Sedykh won the European junior championship, and at the 1976 Olympics in Montreal he won his first gold medal with a throw of 77.52 m (254 feet 4 inches), while Bondarchuk won a bronze medal. Sedykh's great rivalry with Sergey Litvinov began in 1980; at the Moscow Olympics, Sedykh set a new world record of 81.80 m (268 feet 4 inches) in his first throw of the final round, beating out Litvinov and Juri Tamm. It was the second consecutive Olympics in which Soviets won all the hammer throw medals.

Sedykh was a master of the three-turn technique, keeping his arms straight as he turned with great speed in the circle, and he wrote a thesis on powerbuilding in hammer throw training. He won European championships in 1978 and 1982. Litvinov set world records in 1982 and 1983, which were superseded by Sedykh's three world records in 1986, including a throw of 86.74 m (284 feet 6 inches). Also in 1986 Sedykh defeated Litvinov soundly to win a third European championship.