MONACO — Sprint stars Usain Bolt of Jamaica and Tyson Gay of the United States will race each other at least three times at elite Diamond League meetings next year.

Track and field's governing body said today that the two fastest men in history are contracted to compete in seven of the 14 cities in Asia, Europe and the United States featured in the inaugural global series.

The rivals must decide which meets will host their showdowns, over 100 or 200 meters.

Gay said "the only thing I know is I will be racing Bolt at least three times or more."

The new circuit will be the top tier of track and field in 2010 with no Olympics or World Championships on the schedule.