Shaunae Miller (BAH) of Bahamas dives over the finish line to win the gold in women's 400m final, Aug 15, 2016. [Photo/Agencies]

RIO DE JANEIRO -- Shaunae Miller of the Bahamas shocked gold medal favorite Allyson Felix to win a thrilling women's 400m final at the Rio Olympics on Monday.

Miller recorded a personal best of 49.44 seconds to finish just seven hundredths of a second ahead of the USA's Felix at the Olympic Stadium.

Shericka Jackson of Jamaica took bronze in 49.85.

Miller led by several metres at the final bend but had to withstand a late charge from Felix before diving over the finish line.

Slow motion replays showed the 22-year-old's outstretched arms were just ahead of Felix.

Overcome with emotion, Miller remained on the ground for several minutes after her victory.

Felix, 30, is a three-time 200m world champion. She won the event at the London 2012 Games and was going for her fifth Olympic gold medal.