The Presidents Cup has been held biennially since 1994 . Initially it was held in even numbered years , with the Ryder Cup being held in odd numbered years . However , the cancellation of the 2001 Ryder Cup due to the September 11 attacks pushed both tournaments back a year , and the Presidents Cup is now held in odd numbered years . It is hosted alternately in the United States and in countries represented by the International Team
September 11 attacks
September 11 attacks
Presidents Cup