‘It’s unheard of’: How Katie Ledecky excels as both an endurance and speed swimmer

The American swimmer is extraordinary over short distances but she has also mastered skills that make her almost unbeatable over 1500m

After Katie Ledecky versus Ariarne Titmus, prepare for Ledecky against herself.

That's how it seems, anyway, when the American swims the 1500m freestyle: she is so superior to her rivals that only a major - and highly unlikely - technical or tactical breakdown could deny her victory.