NASSAU, Bahamas (AP) The United States, anchored by Ryan Bailey, won the 4x100 relay, defeating Usain Bolt's Jamaica at the IAAF World Relays meet on Saturday.
The Americans, with Justin Gatlin, Tyson Gay and Mike Rodgers also running, clocked 37.38 seconds with Jamaica finishing in 37.68. Jamaica set the world record of 36.84 three years ago at the London Olympics.
In other finals, the American men easily won the 4x800, clocking 7:04.84.
The United States won the women's distance medley relay in 10:36.50, setting a world record in the new event. Kenya was second. The legs are 1,200 meters, 400, 800 and 1,600.
Nigeria took the women's 4x200 in 1:30.52. The American women led by Allyson Felix had a big lead until two of their runners stumbled in a collision.