There was no stopping Olympic champion Omar McLeod at the World Championships in London on Monday, as he stormed to victory in the men's 110m hurdles final.
The Jamaican clinched the gold medal with a time of 13.04. That was 1/100th of a second faster than his winning time in Rio.
Russian Sergey Shubenkov – participating as a neutral in London – took silver with a time of 13.14, while Balázs Baji of Hungary won the bronze in 13.28.
Meanwhile, in the men's 200m heats, Jereem Richards of Trinidad and Tobago qualified fastest after winning heat 2 with a time of 20.05.
South African Wayde van Niekerk, the 400m world record holder and Olympic champion, is going for the double in London this week, and also qualified for the 200m semi-finals after winning heat 3 in 20.16.
Jamaica's Yohan Blake also went through after winning heat 1 in 20.39.
In the women's 1500m final, another Olympic champion returned to the top of the podium as Faith Chepngetich Kipyegon crossed the line in first place with a time of 4:02.59.
It was a fight to the finish, as Kipyegon only narrowly pipped American Jennifer Simpson and South African Caster Semenya to the line. Simpson took silver in 4:02.76, followed by Semenya in bronze with 4:02.90.
There were no surprises in the women's hammer throw final as 2012 and 2016 Olympic champion Anita Wlodarczyk won with a throw of 77.90.
China's Zheng Wang was second with 75.98 and another Pole, Malwina Kopron, was third with 74.76.
The women's triple jump gold changed hands as it went to Yulimar Rojas with a mark of 14.91, followed by Caterine Ibarguen of Colombia in silver with 14.89.
At Rio 2016, it was Ibarguen who won the gold and Rojas who had to settle for silver.
Kazakhstan's Olga Rypakova claimed the bronze with a mark of 14.77 – the same result she achieved in Rio.