Botswana's Isaac Makwala became the first man in history to run a sub-20s 200m and a sub-44s 400m on the same day on Friday.
The 30-year-old won both events at the Meeting de Madrid 2017, the second-tier IAAF World Challenge meeting held in the Spanish capital.
Considering the 40-degree temperatures at the stadium, the Botswana sprinter may well have felt like he was running at home and it sure looked like it during his two visits to the track.
Makwala started his history-making day in the 400m, which he dominated from start to finish out of his lane six draw. He was comfortably ahead of the rest of the competitors by the hallway mark, leaving only the clock as a target.
As it happened, he crossed the line in 43.92 seconds, for his second career sub-44-second time - though Michael Johnson's meeting record of 43.90 set in 1994 remains.
"I'm satisfied, but I know I can run faster," Makwala said in the 75-minute gap between events. "My goal in London is the gold medal; I can do it."
Meanwhile, in still conditions later on, he won the 200m in a personal best of 19.77 seconds, taking 0.19 off his previous best and breaking the meeting record of 19.92 set by Carl Lewis in 1987.
Makwala's 200m time means he now has the season's best for the distance, bettering South Africa's Wayde van Niekerk who he will be hard-pressed to get the better of if he is to win the 400m world title next month.
He will continue his preparations for those IAAF World Championships next Friday at the IAAF Diamond League meeting in Monaco.
Meanwhile, there were further wins for African athletes across the programme at Estadio de Vallehermoso.
Antoine Gakeme (Burundi) and Mohamed Hamada (Egypt) finished 1-2 in the men's 800m, Kenyans Benjamin Kigen and Silas Kiplagat did the same in the 1500m while South Africa's Cornel Fredericks placed second behind former world champion Bershawn Jackson in the 400m hurdles. Fredericks' long jumping compatriot Zarck Visser notched up his season's best of 8.23m while finishing third.
On the women's front, Margaret Bamgbose took third in the women's 400m while Azmera Gebru, Delete Burka (both Ethiopia) and Sandra Tuei (Kenya) swept the 3000m steeplechase.