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
150 metres 150 metres 150 metres is a sprint event in track and field. It is a very rarely contested non-championship and not an IAAF-recognised event. Given the proportion of standard running tracks, the event typically incorporates a bend when held in a track and field stadium, although some especially-built tracks allow the event to take place entirely on a straight. The event was given a high-profile outing in 1997 as an intermediate contest between two 1996 Olympic champions: Donovan Bailey (100 metres) and Michael Johnson (200 metres). Johnson pulled up mid-race, allowing Bailey to win the $1 million prize. This race