WHITE PLAINS, New York, Oct 5, 2007 (AFP) - BALCO, the San Francisco lab that peddled performance enhancing drugs to athletes, continues to rock the sports world four years after it became a byword for cheating.

Marion Jones, once the golden girl of US athletics, Friday pleaded guilty to lying to a federal agent about her use of drugs during the investigation of the company that billed itself as a vitamin and nutritional supplement supplier.