United States' Allyson Felix, right, looks at the scoreboard after the women's 400-meter final during the athletics competitions of the 2016 Summer Olympics at the Olympic stadium in Rio de Janeiro, Brazil, Monday, Aug. 15, 2016. (AP Photo/Lee Jin-man)
Allyson Felix had her fifth Olympic gold in her sights then Shaunae Miller of the Bahamas did something completely unexpected -- diving toward the finish line to win the 400-meter final in spectacular fashion.
Miller finished with a time of 49.44, just ahead of Felix's 49.51.
Felix made a late push after Miller had jumped out early. As the two approached the finish line, Miller's legs began to give out, leaving her only one option: dive.
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