Career
He is currently head coach of the Scorpions de Mulhouse under-22 team Garreau began his senior career with FFHG Division 1 team Aigles de Nice in 2002. He moved to Rapaces de Gap of the Ligue Magnus for 2003 and 2004 before departing for Sweden"s Division 2 in 2005.
He played one season with Vimmerby IK and another with Grästorps IK before returning to France and the Lyon Hockey Club for 2007.
While he never played for a championship winning team, Garreau twice played with teams finishing in second place: the junior Anglet Hormadi team in 2001 and the Lyon Hockey Club FFHG Division 2 team of 2007. In 2009, he joined Castors d"Avignon of Division 1,as captain and coach(started from the 6th match againsted with Deuil-Garges) at season 2010, he helped Avignon club echeloned successfully finally.
He retired in 2011 and became Youth Hockey Supervisor of Scorpions de Mulhouse and later became head coach of their under-22 team