Ariarne Titmus wins gold, Kate Ledecky third in 400 free showdown

(Photo credit: Rob Schumacher-USA TODAY Sports)

PARIS -- Australian Ariarne Titmus defended her Olympic 400 meters freestyle title on Saturday after the world's three fastest women over the distance fought a thrilling battle in the Paris pool.

Canadian 17-year-old Summer McIntosh took the silver and Katie Ledecky of the United States the bronze. All three medalists were past or present world record holders.

The race had