Japan's Shingo Suetsugu has admitted he will have his work cut out when he faces Olympic and world champion Justin Gatlin in the men's 100 meters at the Seiko Super meet in Yokohama later this month.

American Gatlin is one of eight reigning world champions, including women's pole vaulter Yelena Isinbayeva of Russia, who will take part in the Sept. 19 meet at Nissan Stadium in Yokohama, organizers said Thursday.

Gatlin won both the 100 and 200 meters at the world championships in Helsinki last month. Asian record-holder Suetsugu did not compete in the 100 and was eliminated in the semifinal stage of the 200.