In June 2021, he set a new national record under-20 with in Salon-de-Provence. The following month, he won the gold medal at the U20 European championships in
Tallinn with a jump of 5.64m. During the U20 world championships in Cali, he became world champion with a jump of at his second attempt. He then improved his personal best with . On August 31, 2022, he broke the French junior pole vault record for the third time in
Sankt-Wendel with a jump of . He became the second performer in the history of the category behind Armand Duplantis, who vaulted in 2018. Ammirati qualified for the
2024 Summer Olympics; however, he failed to advance to the finals. Subsequently, a video of one of his attempts where he knocked down the crossbar with his
penis went
viral. Following this, he was offered $250,000 by the Vice President of the pornographic website
CamSoda to create a
webcam show. Ammirati was listed by
Variety as one of the most viral athletes of the 2024 Summer Olympics, alongside
Yusuf Dikeç and
Stephen Nedoroscik. == Records ==