Aries Merritt, the 110 metres hurdles world record holder who underwent a kidney transplant a week after winning bronze at the 2015 International Association of Athletics Federations (IAAF) World Championships, will return to this year's version of the event in London in full health.

 There was big disappointment for 19-year-old Noah Lyles, a surprise winner over 200m at last month

I wasn't able to run today but I know God still has big plans for me," tweeted Lyles, whose Shanghai

Two huge long jump talents, Rio 2016 Olympic gold medallist Tianna Bartoletta and London 2012 champion and triple world champion Brittney Reese, produced an extraordinary display at the USA Track and Field World Championships trials in Sacramento as both qualified for this summer’s International Association of Athletics Federations (IAAF) World Championships in London.

seconds on Friday as he clocked 9.95, did not start in the longer sprint.Other qualifiers included Noah

Lyles, surprise winner of this season’s IAAF Diamond League meeting in Shanghai in 19.90, who ran 20.54

The United States Track & Field Championships that start in Sacramento tomororw are due to feature 23 Olympic gold medallists - but a new wave of talent could mean many familiar names fail to qualify for this summer's International Association of Athletics Federations (IAAF) World Championships in London. 

this weekend ©Getty ImagesThe story looks potentially the same in the men's 200m, where Coleman and Noah

Lyles - who won the IAAF Diamond League in Shanghai in 19.90 - are the only two Americans under 20 seconds

Noah Lyles of the United States and Kenyan Kipyegon Bett produced the headline performances at the International

Lyles, 19, who won 100 and 4x100 metre gold at last year’s IAAF World Under-20 Championships in Bydgoszcz

Rudisha, the double Olympic and world champion, during the race on his way to winning the 800m in 1:44.70.Lyles

India's Neeraj Chopra secured gold in the javelin event in style at the International Association of Athletics Federations (IAAF) World Under-20 Championships with a world record effort for his age group in Bydgoszcz today.

U20 Championships.”Elsewhere, Michael Norman, the 200m champion, Hakim Montgomery, Brandon Tayor and Noah

Lyles, winner of the 100m, conjured another spirited display on the track on their way to gold in the

American Noah Lyles claimed the men’s 100 metre title on day two of the International Association of

Lyles, who was fourth at the US Olympic trials earlier this month, was the favourite pre-race and stormed

“My fastest race is the 200 and I’m always a late pusher,” said 19-year-old Lyles.