Don't blink, or you might miss Sunday's action on the track in Rio.
The world's fastest man is ready and set to go as he takes on a worthy foe in one of the Olympics' most thrilling events, the 100m dash.
Also Sunday, a decorated USC grad continues her quest for another gold, Simone Biles vaults back into the spotlight, and Southern California rocks Copacabana again Sunday night.
1. Bolt Statement
He is the fastest man on the planet, but even Usain Bolt has goals. The Jamaican is attempting to become the first man to win three straight Olympic 100m gold medals.
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Bolt has rivals in the same way a hammer has a rivalry with a nail. But if there’s one sprinter who stands in his way, it’s American Justin Gatlin. The Athens gold medalist laid down the fastest first-round time at 10.01 seconds, just ahead of Bolt’s 10.07 seconds.
"It wasn't the best start, it felt kind of sluggish," said Bolt, who was running just after noon on Saturday in Rio. "I'm not used to running this early in the morning in any championships."
Bolt will compete in the semifinals of the 100m dash on Sunday. The men’s 100m final is set for Sunday night.
WATCH: Live Stream (4:20 p.m.) | NBC Primetime
2. Some More Simone
After cruising to victory in the all-around women’s event on Thursday, Simone Biles added to her gold to her collection. She captured first in the individual vault final.
WATCH: Live Stream (10 a.m.) | NBC Primetime
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3. Fight On Into the Finals
If you’re from Southern California, Allyson Felix is your Olympian.
The speedster from Los Angeles, who now lives in Santa Clarita, will compete Sunday in the semifinal of the 400m dash. Felix has six career Olympic medals, tying her for the most medals for anyone from USC.
The 30-year-old, a member of President Obama’s Council on Fitness, Sports and Nutrition, graduated from USC with a degree in elementary education. At 18, Felix made her Olympics debut in Athens, claiming silver in the 200m. In Beijing, she captured another silver in the 200 before finally breaking through with a gold in the event in London. She also won gold in the 4x100m and 4x400m relays in 2012 to become the first female U.S. athlete since 1988 to win three gold medals at a single Olympics.
Felix topped her qualifying heat Friday, slowing to an easy jog across the line. The semis are scheduled for 4:35 p.m., finals are set for Monday at 6:45 p.m.
WATCH: Live Stream (4:35 p.m.) | NBC Primetime
4. Sunday Fun Day at Copacabana
Two of the Olympics most exciting athletes are back in the party atmosphere of Copacabana Sunday night. Manhattan Beach's Kerri Walsh Jennings and Costa Mesa’s April Ross are into the elimination rounds after solid group stage performances. Walsh Jennings is in search of her fourth Olympic gold.
WATCH (7 p.m.): Live Stream | NBC Primetime
Also on Sunday Night
Men's 400m Final: American sprinter LaShawn Merritt has the podium in his sights after his 2008 gold medal finish.
WATCH: Live Stream (4:20 p.m.) | NBC Primetime
Women's 3m Springboard: Competitors TBD
WATCH: Live Stream | NBC Primetime
Complete Live Stream Listings | Check All TV Listings
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