Health scare for Ledecky, Sun survives at world swimming
Ledecky withdrew from the morning's 200m free heats in Gwangju and was assessed by doctors before deciding to also skip the 1,500m final later on Tuesday - an event she has crushed at the last three world championships.
The 22-year-old shaved 0.32 seconds off the record mark he set at the 2015 world championships in Kazan when he first announced himself on the global stage.818 days ago
Katie Ledecky led from the start and inexorably stretched out the gap over her opponents.1164 days ago
Ledecky won the final at Australia's Gold Coast in three minutes 58.37 seconds, breaking her own world record.1885 days ago