TOKYO (AP) — The Latest on the Tokyo Olympics, which are taking place under heavy restrictions after a year’s delay because of the coronavirus pandemic:

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The International Tennis Federation says Dutch player Jean-Julien Rojer has tested positive for COVID-19 and been withdrawn from the doubles tournament with partner Wesley Koolhof.

The eighth-seeded pair were scheduled to play Marcus Daniell and Michael Venus of New Zealand. Daniell and Venus received a walkover into the quarterfinals.

Rojer has been placed in isolation.

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A second judo athlete has dropped out of the Olympics before facing Israel’s Tohar Butbul in the 73-kilogram division.

Olympic officials say Sudan’s Mohamed Abdalrasool didn’t show up to face Butbul in their round of 32 bout Monday despite weighing in for the bout earlier.

The International Judo Foundation didn’t immediately announce a reason why Abdalrasool didn’t compete, and the governing body didn’t respond to requests for comment. Sudanese Olympic officials also didn’t immediately comment.

Algeria’s Fethi Nourine was sent home from the Tokyo Games and suspended by the IJF on Saturday after he withdrew to avoid a potential round of 32 matchup with Butbul. Nourine was supposed to face Abdalrasool for the right to meet Butbul.

Abdalrasool is the world’s 469th-ranked judoka in his weight class, while the accomplished Butbul is seventh.

Nourine also quit the World Judo Championships in 2019 right before he was scheduled to face Butbul.

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Momiji Nishiya of Japan has won the first ever Olympic skateboard competition for women.

The 13-year-old gave the host nation a sweep of golds in the street event a day after after Yuto Horigome won the men’s event.

Rayssa Leal, a 13-year-old from Brazil, won the silver. That's her country’s second in skateboarding after Brazilian Kelvin Hoefler took silver on Sunday in the men’s event.

The women’s bronze went to Funa Nakayama, also from Japan.

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The men’s volleyball team from Russia has beaten the United States in pool-play action.

The Russians took control when they held off two match points before taking the second set 27-25 to go up 2-0. The Americans rallied to win the third set before falling 25-23 in the final set for their first loss of the tournament.

The U.S. had swept France in its opening pool play match. The ROC team is now 2-0 after beating Argentina in their first match.

In an earlier pool play match Monday, Iran beat Venezuela 3-0 for its second straight win.

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Naomi Osaka is into the third round of the Tokyo tennis tournament.

The host country’s superstar stepped up her game when she needed to in a 6-3, 6-2 win over 49th-ranked Viktorija Golubic of Switzerland to reach the last 16 at Ariake Tennis Park.

The second-ranked Osaka will next face either 2019 French Open runner-up Marketa Vondrousova of the Czech Republic or Mihaela Buzarnescu of Romania.

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The men’s surfing contest at the Olympics has been delayed 90 minutes due to low tide at Tsurigasaki beach, about 90 miles east of Tokyo.

The International Surfing Association, the sport’s Olympic governing body, said low tide combined with the shifting weather has destabilized the quality of the surf conditions for the sport’s big debut.

The call came at the end of the eight 1-on-1 heats for the women's competition, and now the men’s game is pushed back to start at 1:18 p.m. local time.

Such delays are not unusual in competitive surfing, as it is perhaps the only organized sport that is both dependent on an uncontrollable variable — the weather — and defined by a literal uneven playing field — the ocean.

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MEDAL ALERT

Caeleb Dressel is off on his quest for six swimming gold medals at the Tokyo Games, leading off an American victory in the men’s 4x100-meter freestyle relay.

Dressel gave the U.S. a lead it never relinquished, swimming the first leg in a blistering 47.26 seconds.

Blake Pieroni and Bowe Becker kept the Americans out front before Zach Apple turned in an anchor leg of 46.69 to leave no doubt at the end.

The U.S. won in 3 minutes, 08.97 seconds, the third-fastest relay in history. Italy took the silver in 3:10.11, with the bronze going to Australia in 3:10.22.

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MEDAL ALERT

Australia’s Ariarne Titmus has defeated American Katie Ledecky in the 400-meter freestyle at the Tokyo Olympics.

Titmus won one of the most anticipated races of the games, capturing the gold medal with the second-fastest time in history.

Titmus, who trailed by nearly a full body-length at the halfway mark of the eight-lap race, turned on the speed to touch in 3 minutes, 56.69 seconds.

Defending Olympic champion and world-record holder Ledecky settled for the silver this time in 3:57.36 -- the fourth-fastest time ever recorded.

No one else was even close. The bronze went to China’s Li Bingjie in 4:01.08.

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MEDAL ALERT

Britain's Adam Peaty has repeated as Olympic champion in the men’s 100-meter breaststroke at the Tokyo Aquatics Centre.

Peaty was perhaps the surest best at the Olympic pool, being the first man to break both 58 and 57 seconds in his signature event. He posted the fifth-fastest time in history (57.37 seconds) to blow away the field.

Arno Kamminga of the Netherlands claimed the silver in 58.00, while the bronze went to Italy’s Nicolo Martinenghi in 58.33. American Michael Andrew was next in 58.84 -- the second straight final in which a U.S. swimmer finished fourth and was denied a medal.

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The Olympic archery schedule has been altered for Tuesday due to expected high wind and rain from a forecasted typhoon.

The morning sessions involving first- and second-round matches are officially delayed until noon local time at the Yumenoshima Park Archery Field. But the afternoon session has been postponed.

The plan is to make up the matches Wednesday and Thursday. The individual finals for the men and women at the Tokyo Games are still scheduled for Friday and Saturday.

It’s the first time the Olympic archery scheduled has been majorly influenced by weather, according to World Archery. At the 2008 Beijing Games, there was an hour delay.

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MEDAL ALERT

Maggie MacNeil has captured Canada’s first gold medal at the pool with a victory in the women’s 100-meter butterfly.

The reigning world champion touched first in 55.59 seconds, edging out China’s Zhang Yufei (55.64) for the top spot. Australia’s Emma McKeon took the bronze in 55.72, beating American teenager Torri Huske by one-hundredth of a second.

Huske went out fast, as is her style, and appeared to be close to the front with about 10 meters to go. But she faded on her final strokes and just missed a spot on the podium.

The U.S. team was denied a medal for the first time in the swimming competition.

Defending champion and world-record holder Sarah Sjöström of Sweden was seventh.

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NBC says an estimated 17 million people in the United States watched the opening ceremony for the Tokyo Olympics, down 36% from the kickoff to the Rio de Janeiro Games five years ago.

Nielsen says the 17 million includes people who watched the ceremony live on NBC or online when it aired Friday morning and those who saw an edited version on NBC in prime time that night.

NBC was unable to break down how many people watched live and how many saw the prime-time version. The 26.7 million who saw the Rio opening ceremony included both television and online viewership.

Nine years ago, when the Summer Olympics were held in London, the opening ceremony drew a record-setting U.S. audience of 40.7 million people.

It’s difficult to tell how much the sluggish start to the Tokyo Games reflects decreased interest in the Olympics, which were delayed a year because of the COVID-19 pandemic, or profound changes in how Americans watch television. With the explosion of streaming as an alternative, ratings for live television have dropped sharply over the past five years.

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MEDAL ALERT

Norway’s Kristian Blummenfelt has won the men’s triathlon in a time of one hour, 45 minutes and four seconds, 11 seconds ahead of Britain’s Alex Yee.

New Zealand’s Hayden Wilde was third.

Blummenfelt is the first Norwegian to medal in triathlon, which combines swimming, cycling and running. He finished 13th in the Rio Games in 2016.

Blummenfelt was in fifth after the 1,500-meter swim and 40-kilometer cycling legs of the race before surging to the win in the final stage.

Britain’s Jonathan Brownlee, who won silver in Rio and bronze in London in 2012, finished sixth.

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Defending champion Fiji has opened the men’s Olympic rugby sevens competition with a 24-19 comeback win over Japan.

The highly favored Fijians scored in the opening 30 seconds of the tournament, with Jiuta Wainiqolo posting the first points after Japan failed to control the ball from the kickoff.

The Fijians went close to doubling the lead but Wainiqolo’s attempted one-handed pickup off the ground resulted in Japan captain Chihito Matsui running three-quarters of the field to equalize for the hosts.

The Fijians regained the lead but, after the half-time siren sounded, Japan’s Fiji-born Lote Tuqiri crossed to give the hosts a surprising 14-12 lead at the break.

Japan, a surprise semifinalist when rugby sevens made its Olympic debut in 2016, extended the margin to seven points early in the second half before Fiji responded with two tries and had one disallowed after the full-time siren to clinch the win.