RIO DE JANEIRO (AP) — Michael Phelps has earned the 19th gold medal of his career, helping the United States win the 4×100-meter freestyle relay at the Rio Olympics.

Phelps took the second leg after Caeleb Dressel led off for the Americans, and it was another memorable performance at a distance that isn’t Phelps’ specialty. His split of 47.12 seconds gave the Americans a lead they never relinquished. In fact, it was a faster time than all but the three anchors on the medal-winning teams.

Ryan Held protected the top spot before handing off to Nathan Adrian, the top sprinter in America. It was never really in doubt at that point, as Adrian touched first in 3 minutes, 9.92 seconds. Defending Olympic champion France took the silver in 3:10.53, while Australia rallied for the bronze in 3:11.37.

Brazil’s dream of winning a soccer gold medal is quickly turning into a nightmare.

Katie Ledecky has given the United States its first swimming gold medal of the Rio Olympics with a world record in the women’s 400-meter freestyle.

The result was totally expected. Ledecky has dominated the longer freestyle events since winning gold in the 800 free at the London Olympics as a 15-year-old.

She was doing nothing but racing against the clock Sunday night. No problem there.

Ledecky kicked off the first wall with a lead of nearly a body length and steadily pulled away from the overmatched field — as well as the world-record line superimposed on the video screen as her powerful arms churned through the water.

When Ledecky saw the time — 3 minutes, 56.46 seconds — she let out an uncharacteristic scream and pumped her right fist. The 19-year-old crushed the mark of 3:58.37 that she set nearly two years ago on the Gold Coast of Australia, and had been chasing ever since.

Brazil drew its second consecutive game at the Olympic tournament Sunday, being held by Iraq to a 0-0 draw and hearing more loud jeers from the home fans.

The result in Brasilia leaves Brazil tied for second place in Group A, in need of a victory in the final game, against Denmark on Wednesday in Salvador, to advance to the next round and avoid another embarrassing elimination at home two years after the 7-1 loss to Germany at the World Cup.

Neymar, the tournament’s biggest star, played below expectations for the second straight game, and young strikers Gabigol and Gabriel Jesus also struggled.

Upset fans chanted “Marta, Marta,” in reference to the five-time world player of the year who has been thriving with the women’s national team.

Adam Peaty of Britain has set a world record to win gold in the men’s 100-meter breaststroke at the Rio Olympics. Cameron van der Burgh of South Africa earned the silver and Cody Miller of the United States claimed the bronze.

Top-ranked Novak Djokovic lost in a first-round Olympic tennis match to 2009 U.S. Open champion Juan Martin del Potro.

Andy Murray and his older brother Jamie exited in the first round of doubles at the Rio de Janeiro Games, making them 1-3 as a team at the Olympics.

The second-seeded British pair lost to Brazilians Thomaz Bellucci and Andre Sa 7-6 (6), 7-6 (14) in front of a loud partisan crowd Sunday night, hours after Andy won his opening singles match as the defending champion in that event.

Sarah Sjostrom of Sweden has broken her own world record in the women’s 100-meter butterfly to take gold at the Rio Olympics.