Ian Thorpe
Caeleb Dressel
Stat by stat
Bars are scaled to the leader in this list.
The verdict
Dead even across the measured categories. Our all-time ranking places Ian Thorpe at #4 and Caeleb Dressel at #6.
The case for Ian Thorpe
The 'Thorpedo', the finest middle-distance freestyler of his generation and a national hero in Australia. Thorpe won five Olympic gold medals and 11 world-championship titles, dominating the 200m and 400m freestyle and repeatedly lowering the 400m world record toward the 3:40 barrier. At his home Sydney 2000 Games, aged 17, he won the 400m freestyle in world-record time and anchored a stunning relay victory over the United States. At the 2001 Fukuoka World Championships he won six gold medals. Renowned for his size-17 feet, immense reach and metronomic stroke, Thorpe combined precocious success with genuine longevity across two Olympic cycles, and remains, statistically and stylistically, one of the most complete freestylers the sport has produced.
The case for Caeleb Dressel
The sprint-butterfly heir to Phelps and one of the most explosive swimmers ever. Dressel won eight Olympic gold medals through Paris 2024, including a five-gold haul at Tokyo 2020 across the 50m and 100m freestyle, 100m butterfly and both American relays. He holds the 100m butterfly world record (49.45) and has been part of numerous world-record relays. At the 2017 Budapest World Championships he matched a single-meet record with seven gold medals, and across his career he has accumulated around 15 world-championship titles. Renowned for enormous power, a ferocious start and underwater speed, Dressel is the defining sprinter of the textile-suit era, though a mental-health break and a tougher Paris meet showed the toll of racing at the extreme.