Céleste Mordenti

2018–2019

Mordenti competed at the 2018 European Championships where she helped the junior Luxembourg team finish 25th.^[5] She became age-eligible for senior level competition the following year and competed at the 2019 European Championships, finishing 58th in the all-around qualifications.^[6] Then at the 2019 European Games, she finished 29th in the all-around qualifications.^[7] She competed at her first World Championships and finished 137th in the all-around qualifications and did not earn a berth for the 2020 Summer Olympics.^[8][9]

2020–2021

Luxembourg was one of the countries that chose to compete at the 2020 European Championships, and Mordenti was the third reserve for the balance beam final.^[10] She then finished 53rd in the all-around qualifications at the 2021 European Championships.^[11] At the 2021 World Championships, she finished 34th in the all-around during qualifications,^[12] becoming the highest placing Luxembourgish gymnast in World Championships history.^[13]

2022–2023

Mordenti finished 66th in the all-around qualification round at the 2022 European Championships.^[14] Then at the 2022 World Championships, she finished 68th in the all-around qualifications.^[15] She won silver medals on the uneven bars and balance beam at the 2023 Luxembourg Open.^[16] She then placed seventh on the uneven bars at the 2023 Osijek World Challenge Cup and fifth on the uneven bars at the Mersin World Challenge Cup.^[17][18] At the 2023 World Championships, she finished 64th in the all-around qualifications and did not qualify for an Olympic berth.^[19][20]

Mordenti at the 2023 Luxembourg Open

2024

Mordenti placed 27th in the all-around at the 2024 European Championships.^[21] She then competed at the Szombathely World Challenge Cup, where she won bronze on the uneven bars behind Charlotte Booth and Tonya Paulsson.^[22] In doing so, she became the first Luxembourgish gymnast to win a World Cup series medal.^[23]

2025

At the Varna World Challenge Cup Mordenti qualified to all four event finals. She won bronze on uneven bars behind Nola Matthews and Ruby Stacey.^[24] At the 2025 European Championships she finished thirty-first in the all-around during the qualification round. At this competition Mordenti, alongside Greek gymnast Eleftherios Petrounias, was awarded the SmartScoring Shooting Star Award, an award which is presented to "a gymnast with an exceptional story in the spotlight, someone who is an inspiration for the future generation of gymnasts and the general public alike".^[4] In both competitions, she performed a tucked salto backwards with two twists (720°) as a newly developed dismount from the balance beam. In being the first gymnast to successfully compete it in a major international competition, it was named the "Mordenti" after her by the International Gymnastics Federation in the Code of Points.^[25]

Prior to the Paris World Challenge Cup, Mordenti sustained a foot injury which also prevented her from competing at the 2025 World Championships.^[26]