Katie Ledecky

Katie Ledecky has amazed the world all week. She won the 400-meter freestyle by nearly five seconds and broke her own world record. She won the 200 freestyle before nearly getting caught on the final length.

But Ledecky's trademark moment of the Rio Games came Wednesday. Swimming the anchor leg of the 4x200 freestyle relay, Ledecky entered the pool with a nearly one-second deficit to Australia. She proceeded to win the race by roughly two seconds.

Ledecky swam her leg in 1:53.74 (she won the 200 freestyle Tuesday in 1:53.73). Penny Oleksiak of bronze-medalist Canada swam the next best time of 1:54.96. Ledecky's next closest teammate was Allison Schmitt at 1:56.21.

The U.S. finished at 7:43.03 -- 0:01.84 ahead of Australia.

After taking silver in the 4x100 freestyle Saturday, Ledecky has won three gold medals. Next up, Ledecky has the 800 freestyle, the event she won a gold medal in 2012. The heat for the 800 freestyle is Thursday, with the final Friday.

More Olympics:
-- Lolo Jones: I'm Not Hope Solo
-- Lilly King And America Celebrate 'Clean' Gold Medal
-- Why Did Michael Phelps Laugh During National Anthem? Blame The Orioles

-- Follow Jeffrey Eisenband on Twitter @JeffEisenband.