Great Britain’s Dina Asher-Smith and USA’s Kaylin Whitney, in addition to meeting each other in the 100m, will face off again at 200m.
Whitney holds the 2014 best mark with her 22.49 from the USA Junior Championships at Hayward Field earlier this month.
Whitney, 16, set a world youth best with her time while 2013 European junior champion Asher-Smith’s best of 22.74 dates from late June.
Cuba’s Arialis Gandulla is the dark horse with a 23.19 mark set back in March, and Sweden’s 2013 world youth champion Irene Ekelund should not be left out in the medal reckoning.
Parker Morse for the IAAF