GENEVA: Jamaican and US sprint teams are set to face off at next month`s athletics meet in Zurich, with the teams led by Usain Bolt and Tyson Gay lining up to challenge world records, organisers said Thursday.

"The Usain Bolt-anchored Jamaican team with Mario Forsythe, Yohan Blake, and Marvin Anderson will be facing a US team who will set out to write relay history," said organisers of the August 12 IAAF Diamond League meet.

Gay will spearhead a US team that is also due to feature Wallace Spearmon and Walter Dix, all of whom are 200m specialists. Trell Kimmons, who had led the US junior team to a world record in recent years, will run the first baton.

Besides the relay, Jamaicans and Americans are also set to clash in the individual races.

Jamaica`s Veronica Campbell-Brown will challenge US sprint star Carmelita Jeter in the women`s 100m.

Jeter, the second fastest 100m runner of all time, had won nine of ten races this year. She was only defeated by Olympic and world champion Campbell-Brown.

BDST: 1646 HRS, JULY 29, 2010