Usain Bolt aims to crown his legacy with an unprecedented Olympic three-peat at the Rio Games.

The certified sprinting legend also is angling to top that off by running the first ever sub-19 seconds 200-meters.

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Bolt suggested he might not stop there, leaving open the chance he could extend his career beyond the 2017 season he has said would be his last.

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Bolt has already swept the 100 and 200-metres sprints at the last two Olympics and added gold in the 4×100 relays in both Beijing 2008 and London 2012 with his team mates.