For beating Allyson Felix, Shaunae Miller gets a gold medal. Maybe they should give her a cape, too.

It took a head-first dive, Superwoman-style, for Miller to spring an Olympic upset Monday over America's top female sprinter in the 400 meters and deny her a record fifth gold medal.

Miller, a 22-year-old from the Bahamas, took an early lead, then held off Felix's charge along the straightaway. Neck-and-neck with two steps to go, Miller sprawled and tumbled across the line to win by .07 seconds.

Now, instead of a coronation for Felix, it's a celebration for Miller, who finished second to the American at last year's world championships. Her dive will go down as one of the most dramatic images we've seen at these, or any, Olympics.

Not that she planned it that way.

"I don't know what happened. My mind just went blank," Miller said. "The only thing I was thinking (about) was the gold medal, and the next thing I know, I was on the ground."

And yet, she didn't even get the evening's biggest roars. Those were reserved for pole vaulter Thiago Braz da Silva, who gave Brazil its first medal in track and field by setting an Olympic record (6.03 meters) to upset world-record holder and defending champion Renaud Lavillenie of France.

"I thought I was in a movie. ... My first urge was to go run and hug Thiago so much," said bronze medalist Sam Kendricks of the United States. "But I knew that it was his moment and he needed to be on camera and experience it for himself."

Lavilleine put the bar at 6.08 meters for his last attempt, and as he was getting ready to jump, the crowd booed. He responded with a thumbs-down sign. After the loss, he complained about the spectators taking sides.

In the 800 meters, David Rudisha of Kenya won a second straight gold medal, and Clayton Murphy picked up bronze to give the United States its first medal in that event since 1992.

Simone Biles lost her status as Rio de Janeiro's juggernaut after a blunder on the balance beam prevented her from a record-tying fourth gold in gymnastics at these games.

The American's shutout came on a day the Rio Games were dogged by rain, wind and fire.

In the morning, there was too little wind, then too much, at the sailing regatta on Guanabara Bay, where men's and women's medal races were postponed until Tuesday. In the afternoon, smoke and ash from a wind-whipped wildfire billowed over the field hockey stadium in Deodoro.

Biles' blunder allowed Sanne Wevers of the Netherlands to take the gold medal and Laurie Hernandez of the U.S. to slip past Biles for the silver. It also ended Biles' bid to become the first female gymnast to win five golds in a single Olympics.

Already a three-time gold medalist (all-around, team and vault) when she walked onto the floor on Monday, Biles was a favorite on beam as the reigning world champion.

She topped qualifying last week and had just completed the most difficult part of her routine — a tumbling pass that stretches the length of the 4-inch wide slab of wood — when she missed the landing following her punch front flip.

A fresh round of troubles tormented South America's first Olympics on Monday:

—The German Olympic team said canoe slalom coach Stefan Henze died from injuries sustained in a car crash last week.

—The Egyptian judo athlete who refused to shake his Israeli opponent's hand after losing a first-round heavyweight fight was sent home.

—The Olympic Broadcasting Service said seven bystanders sustained minor injuries when a television camera it operates plummeted about 30 feet in the Olympic park.

—South Korean cyclist Park Sang-hoon was taken from the velodrome on a stretcher with his neck immobilized after a crash.

—And Usain Bolt, the co-star of these games along with Michael Phelps, said that a tight schedule slowed down the sprinters in the 100 meters Sunday. Bolt blamed the hour turnaround from the semifinals to the finals for his lumbering start before he recovered to win his third consecutive gold medal and retain the title as the world's fastest man.

"I don't know who decided that," Bolt said. "It was really stupid. So, that's why the race was slow."

Other highlights from Day 10:

The lone Russian track and field athlete at the Olympics has won her appeal to compete in Rio. The Court of Arbitration for Sport ruled early Monday that Darya Klishina is eligible to take part in Tuesday's long jump qualifying because she has been based outside of Russia for the last three years and has been subjected to regular drug testing.

Cuban heavyweight Mijain Lopez again bested Turkish rival Riza Kayaalp, putting him in the company of wrestling great Alexander Karelin. Lopez beat Kayaalp 6-0 to capture his third Greco-Roman gold medal. Lopez joins Karelin and Carl Westergren of Sweden as the only wrestlers with three Olympic titles in the classic discipline.

Brazilian native Miriam Nagl has been chosen to hit the opening tee shot Wednesday for women's golf, at the Olympics for the first time since 1900 in France. On Sunday, Justin Rose won the first golfing gold medal since 1904 in St. Louis when he beat Henrik Stenson by two strokes on the Olympic course.