Detailed text transcripts for TV channel - KNTV - 20190724:09:33:00
The start of the summer olympic games. mike tarico of nbc sports is there tonight with some of the team usa athletes to watch. >> reporter: she was the break out star team usa in rio. >> this has been her destiny. >> reporter: and heading into tokyo, gymnast simone biles is as dominant as ever. she could nab the record for the most gold medals ever won by an american female athlete. so could swimmer katie ledecky, looking to build on her incredible run in rio. >> katie ledecka smashes her own world record. >> reporter: on the sand, they could be the team to watch. >> i'm excited. i think we're...