Charismatic Venezuelan Yulimar Rojas and American star Sydney McLaughlin-Levrone go for gold in the triple jump and 400 metres flat in Thursday's action at the World Athletics Championships in Tokyo.
There are four finals in all, and also a first spin round the track for Britain's 800m Olympic champion Keely Hodgkinson.
AFP Sport picks out the three potential highlights:
- Women's 400 metres final -
McLaughlin-Levrone's smashing of the American record, which had stood for almost two decades, in her semi-final will have sent shivers down her rivals' spines.
The manner in which the two-time 400m hurdles Olympic champion coasted in timing 48.29sec suggests that even East German Marita Koch's world record of 47.60sec, which was set nearly 40 years ago, could be under threat.
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