Shericka shows ominous form, Campbell breaks national record in Xiamen

Shericka Jackson was in imperious form at yesterday’s Xiamen Diamond League meet in China, making it back-to-back wins in the event on her way to clocking a season’s best and meet record 21.87 seconds, the second fastest time in the world in the event this season, behind St Lucia's Julien Alfred’s world-best 21.86.