United States Olympic Trials (track and field) fill out the field. Since 1972 there have been a minimum of 24 entries in any event, with the popular sprint events 100 meters, 200 meters, 400 meters and 110 meter hurdles having a minimum of 32 entries. Since 1992, athletes achieving the "A" standard are funded to attend the Olympic Trials, while "B" standard athletes have to pay their own way to the meet. Unlike many other countries, who have a selection committee, the selection to the United States Olympic Team is exclusively by results on the track. It's "do or die" in the prescribed event. If two or
4 × 200 metres relay would break into lane one and make a third exchange in lane one of the second standard 4x100 metres relay zone. Indoors, the event is popular because each leg is one lap of a standard 200 metre indoor track. The men's world record was set at the inaugural IAAF World Relay Championships in Nassau, Bahamas. The record was set by a Jamaican team consisting of Nickel Ashmeade, Warren Weir, Jermaine Brown and Yohan Blake in a time of 1:18.63. The women's world record is 1:27.46, set by a squad called Team USA "Blue" LaTasha Jenkins, LaTasha Colander-Richardson, Nanceen Perry, and