Sprinter clocks a world lead in Kingston while Sanya Richards-Ross is also among the winners with a sub-50 400m

Asafa Powell clocked the first sub-10 seconds 100m of 2015 at the Jamaica International Invitational in Kingston on Saturday, beating America's Ryan Bailey and his fellow Jamaican Nesta Carter who also both dipped inside 10 seconds.

Former world 100m record-holder Powell, who last year returned from a six-month doping ban, clocked 9.84 for his fastest time for four years to beat Bailey with 9.93 and Carter with 9.98.

Jamaica's Elaine Thompson ran 10.92 in the women's 100m to beat the likes of Nigeria's Blessing Okagbare with 11.05 and USA's Olympic 200m champion Allyson Felix with 11.09.

Sanya Richards-Ross was another to clock a world leading time as the Olympic champion ran the first sub-50 seconds 400m of the year, her 49.95 seeing her finish ahead of fellow American Francena McCorory with 50.73. Britain's world champion Christine Ohuruogu clocked 51.48 for fifth.

Jamaica's Nickel Ashmeade won the men's 200m in 20.25, while Shaunae Miller of Bahamas ran a 22.14 world lead to win the women's race ahead of USA's Tori Bowie with 22.29 and Jamaican Shelly-Ann Fraser-Pryce with 22.37.

USA's Jasmin Stowers won the 100m hurdles in 12.39 to go equal 10th on the all-time list and Aleec Harris equalled his world lead in the 110m hurdles with a 13.16 clocking.

Colombia's world champion Caterine Ibargüen the triple jump with a 14.87m world lead and meeting record as Britain's Commonwealth silver medallist Laura Samuel leapt 13.69m for third. Britain's Jade Lally won the discus with 59.90m, while Delano Williams won the 'B' 400m in a PB of 45.42.

» Full results from the IAAF World Challenge meeting can be found at www.iaaf.org