Usain Bolt was the talk of the Olympics on Sunday, winning his third career gold medal in the 100-meter sprint. But there was so much more to talk about, including a record-setting performance in the 400.
1. Michael Johnson's 400 record broken
South Africa's Wayde van Niekerk shattered Michael Johnson's 17-year-old record in the 400-meter dash. Niekerk ran a blazing-fast time of 43.03, breaking Johnson's mark by 0.15 seconds. That doesn't sound like much but look at how much he beat everyone by.
2. Simone Biles wins gold again
To no one's surprise, Simone Biles racked up her third gold in Rio by winning the women's individual vault on Sunday. Her other gold medals are from the women's team all-around and the individual all-around. And she's not done yet.
3. Usain Bolt hasn't slowed down at all
In what he says is his final Olympics, Bolt tracked down Team USA's Justin Gatlin to win the 100-meter final in 9.81 seconds. Rolling Stone described the race perfectly.
"But then, in about a second or two, he strikes, the jets turn on. He overtakes everybody and wins. Just like that. That is how Usain Bolt cemented his legacy once and for all and gave us exactly what we all wanted, and now nobody can catch up to him."
4. US men's and women's basketball
Both the men's and women's basketball teams won their group stage of the tournament. The women improved to 4-0 with a blowout win over China, 105-62, and the men reached 4-0 by holding off a furious rally from France, 100-97.
Sylvia Fowles led the four Lynx players with 13 points. Seimone Augustus scored 10 and Maya Moore had 8 points and 8 assists.
Up next: The US women face Japan in the quarterfinals on Tuesday. The men play in the quarterfinals on Wednesday against an opponent to be determined.
5. Golf and tennis gold
Justin Rose won gold in golf by edging out Henrik Stenson and Andy Murray won his second career tennis gold by defeating Juan Martin del Potro in a four-hour final match. Had del Potro defeated Murray, he would have become the first man ever to knock out the top three seeds en route to a gold medal. He beat No. 1 Novak Djokovic and No. 3 Rafael Nadal in the previous two rounds.
What to watch today
12:00 p.m. – Biles goes for her fourth gold on the balance beam
9:45 p.m. – America's Allyson Felix goes for the gold in the 400-meter sprint.
Remember, Biles and teammate Laurie Hernandez, along with every American male gymnast, will be televised on tape delay by NBC tonight. So if you want to wait to see the suspense yourself, stay away from ESPN's bottom line and any other place where the results could be spoiled.