LAUSANNE, Switzerland — Japanese soccer player Kazuki Ganaha won his appeal today against a ban for taking a vitamin injection.

The Court of Arbitration for Sport overturned a six-match suspension imposed by the Japan Professional Football League in May 2007.

A CAS panel of three arbitrators ruled an infusion of saline and vitamin B1 given to Ganaha by the doctor at his club Kawasaki Frontale "was a legitimate treatment ... within the meaning of the 2007 World Anti-Doping Agency Code."

The 27-year-old Ganaha, who has played six times for Japan and scored three goals, appealed last December.