Melissa Jefferson-Wooden is the hottest sprint ticket heading into next month's world championships in Tokyo, the US athlete having hit a blistering run of form at just the right time.

The 24-year-old became the first woman since 2003 to win the 100-200m double at the US trials earlier this month.

Her personal best of 10.65 seconds in the 100m, making her the joint-fifth-fastest woman in history, is the world lead, meaning she'll head to the Japanese capital with a target on her back having also won all eight of her races in the blue riband event this year.

"I don't see it that way. I don't feel the pressure of being top favourite," Jefferson-Wooden said ahead of Friday's Diamond League meet in Brussels.

"Even though I do have the fastest times, I don't have the accolades -- I'm 'only'

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