Kyle Chalmers was 10 when Amaury Leveaux set the 100 free short-course world record of 44.94 at the 2008 European Short-Course Championships in Rijeka, Croatia.
It was one of four world marks for the Frenchman at the December meet where leading European coaches revolted against the shiny suits after the number of world records set in 2008 reached 105.
Fifteen of the 17 top European nations signed a protest to be presented to FINA after records had started to fall immediately after the introduction of the Speedo LZR Racer suit in February that year.
Within six weeks more than 15 world records had fallen and in Rijeka nine marks went, including those four to Leveaux alone as he became the first man to break the 45-second barrier.
The pool in Rijeka was awash with suits of different colours little more than a fortnight before 2008 drew to a close.
Come 2009 and further technological advancements culminated in 43 world records at the World Championships in Rome at which point FINA agreed the suits would be banned from 1 January 2010.
With his thundering 45.03 at the FINA World Cup in Doha, Chalmers is now just 0.09 off that world record and stands third all-time.
Vladimir Morozov is the only other man to have gone faster than the Australian with 44.95 at the 2018 World Cup in Singapore.
It destroyed the Australian record of 45.46 held by Matt Abood since the Singapore World Cup stop in 2009 and took 0.47 off his personal best from Budapest exactly a fortnight ago.
All-Time Performers
1. 44.94: Amaury Leveaux, 2008 European Short-Course Championships
2. 44.95: Vladimir Morozov, 2018 World Cup Singapore
3. 45.03: Kyle Chalmers, 2021 World Cup Doha
4. 45.04: Florent Manaudou, 2013 French National Championships
=5 45.08: Caeleb Dressel, 2020 International Swimming League Final
=5 45.08: Nathan Adrian, 2009 Duel In The Pool