Katie Ledecky leads the Americans on Tuesday at the swimming world championships, where the United States is the gold-medal favorite in four of the five finals on Day 3.

Katie Ledecky swam the 13th-fastest time ever in the 800-meter freestyle, only she wasn’t racing the 800. She still had 700 meters to go. The American swimming star challenged her own unmatchable world-record pace for the first two-thirds of the 1,

Katie Ledecky delivered another masterclass in distance swimming to collect her sixth world title in the 1,500 metres freestyle on Tuesday and while she was never threatened in the final she felt her rivals were helping her push the sport forward.