José "Chechu" Biriukov Aguirregaviria (born 3 February 1963) is a retired Spanish and Soviet professional basketball player.
Born in Moscow, with a Russian father and a mother of Basque origin.
Began playing basketball for Dynamo Moscow basketball team, before moving to Spain at the age of 20 to play for Real Madrid.
He played a total of 11 seasons in Real Madrid, 22 games in the USSR national team and 67 for the Spanish national team.
He played as shooting guard and was a good three points shooter, using a particular style of shooting the ball flat to the basket.
One of his most famous international games was playing the 1988 McDonald's Open against Boston Celtics.