The competition took place in a City Event held on an esplanade bordering Lake Geneva, 24 hours before the main event at the Stade Olympique de la Pontaise.
The unique setup featured a raised runway off the tiled walkway, with thousands of fans packed in close proximity, and the bar and landing mat placed under a circular tarpaulin.
Big screens provided additional viewing opportunities for passers-by.
Duplantis once again proved to be in a class of his own, winning with a best vault of 6.15 meters.
Only Duplantis and American Sam Kendricks, the silver medallist in Paris, managed to clear 5.92m, while the next four competitors saw their evening’s work end at 5.82m.
Kendricks failed his first attempt at 6.00m, but Duplantis sailed clear, further cementing his dominance in the discipline since winning silver behind Kendricks at the 2019 World Championships.
With only Duplantis remaining in the competition, the bar was raised to 6.15m, eliciting rapturous applause from the crowd. Despite clipping the bar with his knee on his first attempt and stumbling in the run-up on his second due to increasing wind, Duplantis cleared the height on his third attempt, setting a new meet record.
He celebrated his triumph like a true competitor, ripping his shirt free of his shorts and screaming aloud.
Among the field was also Renaud Lavillenie, the 2012 Olympic champion and former world record holder who failed to qualify for what would have been his home Games.
The 37-year-old finished eighth with a best vault of 5.72m.
