The Stockholm Diamond League meeting produced some extraordinary results and performances, with the night defined as much by upsets as by fast times. At the centre of it was a rare defeat for one of Britain's biggest stars on the track.
Keely Hodgkinson, the Olympic 800 metres champion, was beaten despite running a personal best. She clocked 1.54.33 in the Swedish capital, only to finish a fraction behind Switzerland's Audrey Werro, who produced the third fastest time in history to take the win.
Hodgkinson took the loss in her stride. She said she always intends for the race to be quick and described it as a really interesting contest, adding massive respect to Werro for a great run. The defeat, she said, would only motivate her to train harder and make sure it does not happen again.
There was a genuine breakthrough for another British runner. Amy Hunt ran a personal best in the 100 metres, finishing second to the world champion Melissa Jefferson Wooden in 10.97 seconds. It was the first time in her career that Hunt has broken the 11-second barrier.
The upsets were not confined to the British athletes. There was a rare mistake from the pole vault king Armand Duplantis, who was beaten on home soil. The Olympic and world champion, who holds the world record of 6.31 metres, could not clear 6.35 this time, and Australia's Curtis Marshall took victory.
Taken together, it was a night of personal bests and surprises in Stockholm. Even in defeat, both Hodgkinson and Hunt left with faster times than ever before, a reminder that the standard at the top of the sport keeps rising as the season builds.