French poster boy Leon Marchand and U.S. distance dynamo Katie Ledecky made history while the Paris pool saw its first world record on one of the great nights of Olympic swimming on Wednesday.
China's Pan Zhanle ended the programme with another firecracker, the teenager obliterating his own 100 metres freestyle world record to take his country's first swimming gold of the meet.
Before that, Marchand sent sound levels off the scale at the La Defense Arena as he pulled off an unprecedented 200 metres butterfly and breaststroke double -- with a medal ceremony in between.
Both swims were completed in Olympic record time, a remarkable feat in two of the most tiring and demanding disciplines. Until Wednesday, no swimmer had managed to medal in both.
"It was pretty crazy to have the chance to be in the final in both races," he said.
"And then I just loved it, it was huge.
"I've fulfilled a lot of dreams since I've been here. Doing this double was also something I felt capable of, but to really do it in the real world is something else."
With passion, patriotic pride and raw emotion bursting out on all sides, Marchand soaked up the pressure and delivered what even the hype had suggested might be too much.