Ashley Spencer (athlete) the bronze medal in the 400m hurdles in a personal best time of 53.72 seconds. In June 2017, Spencer moved into the world all-time top 25 when she improved her 400m hurdles best to 53.11 seconds, finishing fourth at the U.S. Championships, in a race won by Dalilah Muhammad in 52.64. Ashley Spencer (athlete) Ashley Spencer (born June 8, 1993) is an American track and field athlete who competes in the 400 metres and the 400 metres hurdles. In the 400m hurdles, she is the 2016 Olympic bronze medalist. In the 400m, she is the 2012 World Junior Champion and
Jermaine Brown (athlete) Warren Weir) set an area record time of 1:20.15 minutes. Brown and Weir were joined by Nickel Ashmeade and Yohan Blake in the final, where they broke the world record for the event, taking the gold medal in 1:18.63 minutes. This improved upon the 20-year-old mark set by the Santa Monica Track Club. Jermaine Brown (athlete) Jermaine Brown (born 4 July 1991) is a Jamaican track and field sprinter. He competes in distances from 60 metres to 400 metres. He has a 200 metres best of 20.29 seconds and a 400 m best of 46.24 seconds. He mainly competes internationally