Van Niekerk, Simbine return to winner's circle in Silesia Diamond League

South Africa's Wayde van Niekerk and Akani Simbine returned to the winner's circle and claimed gold at the Silesia Diamond League on Sunday.

Simbine held his form perfectly to claim a memorable win in the men's 100m in 9.97sec.

Simbine beat world champion Fred Kerley into second, on 9.98sec in a photo finish with third-placed Emmanuel Eseme of Cameroon.

Newly-crowned US champion Cravont Charleston was fourth in 9.99sec.

It was Kerley's first defeat of the season in track's blue riband event, but the American seemed unfazed by the result.

"I feel good about todays race. Nothing was missing. I got my job done," he said.

Simbine added: "I won against all of them, not only against the world champion.

"I am the first to beat Fred this year, we have a good friendship, a good rivalry. I am very satisfied with my performance and hope to continue my good form."

Van Niekerk on fire

Simbine's teammate Wayde van Niekerk confirmed his early-season form by scorching to an impressive victory in the men's 400m, the world record holder clocking 44.08sec.

"It is my fastest run in seven years and 44.0 shows that 43 seconds is possible," said Van Niekerk, who has been beset by injury problems since winning Olympic gold in Rio in 2016.

The comeback continues!@WaydeDreamer clocks a season's best and meeting record of 44.08 in the 400m. #SilesiaDL ????#DiamondLeague?? @macroprophoto pic.twitter.com/0nTYlJdKPK

Meanwhile, US sprint star Sha'Carri Richardson reeled in Jamaican Shericka Jackson to claim a morale-boosting victory in the women's 100m.

Richardson and Jackson went into the race as their countries' recently-crowned national champions, the Jamaican having run 10.65 seconds in Kingston to go fifth in the all-time list.

In hot, steamy conditions in