Here are the latest developments:

NASCAR announced Friday that Sunday’s race at Atlanta Motor Speedway and the March 22 race at Homestead-Miami speedway have been postponed. Plus, Sunday’s IndyCar race in St. Petersburg, Fla., has been postponed.

The Masters has been postponed

Little League International is recommending that its leagues begin their seasons no earlier than April 6.

UEFA announced Friday that next week’s Champions League and Europa League games will not be played . Club competitions in England, France and Germany also were scrapped for the rest of the month, at least.

The XFL canceled the rest of its season Thursday.

NASCAR, IndyCar postpone or cancel races

NASCAR announced Friday that Sunday’s race at Atlanta Motor Speedway and the March 22 race at Homestead-Miami speedway have been postponed. The races originally were to be run without fans present before the circuit changed its mind Friday.

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“We believe this decision is in the best interest of the safety and well-being of our fans, competitors, officials and everyone associated with our sport,” the circuit said on Twitter. “We will continue to monitor this dynamic situation as we assess future race events.”

Sunday’s IndyCar race in St. Petersburg, Fla., which likewise was to be run in the absence of fans, also has been postponed. All IndyCar races through April have been canceled.

Late start for Little Leaguers

Little League International on Friday announced it is recommending that its leagues suspend all activities until at least April 6.

“For those leagues that have already begun their seasons, we kindly ask that you postpone all league activity that may involve the gathering of individuals for games, practices, events, or meetings,” the organization said in a statement on its website. “If you have not started your season, we kindly ask that you modify your schedule and season plans to start no earlier than April 6.”

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The start date of the Little League International Tournament has not yet been postponed, and Little League International said it “will be considerate of the missed game play opportunities as we establish a new policy for tournament eligibility for the 2020 tournament season.”

The Little League World Series is scheduled for Aug. 20-30 this year.

Boston Marathon, Masters postponed

The Masters and the Boston Marathon on Friday became the latest major international sporting events postponed.

Masters officials announced that golf’s first major of the year would not start on April 9 as planned and offered no timeline on when it might be rescheduled.

Moments later, Boston Mayor Martin J. Walsh announced that the 124th Boston Marathon would be postponed until Sept. 14.

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The race has been altered only once its history, in 1918 during World War I. The Masters has been held in Augusta, Ga., every year since 1934, except for 1943-45, when it was canceled due to World War II.

European soccer completely shuts down

Almost every European soccer league or competition that hadn’t shut down did so Friday, with UEFA canceling next week’s Champions League and Europa League matches, and professional leagues in England, France and Germany calling off matches for the rest of the month.

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A decision has yet to be made on this summer’s Euro 2020 national team competition. The tournament reportedly may be delayed until 2021 to give Europe’s professional leagues more time to finish their seasons.

PGA Tour pulls the plug on Players Championship

The PGA Tour announced Thursday evening that it was discontinuing the Players Championship after one round was played, and it was canceling all events on its tours through the Valero Texas Open, which was to take place April 2-5.

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“We did everything possible to create a safe environment for our players in order to continue the event throughout the weekend, and we were endeavoring to give our fans a much-needed respite from the current climate,” the PGA Tour said. “But at this point — and as the situation continues to rapidly change — the right thing to do for our players and our fans is to pause.”

Sometimes referred to as golf’s “fifth major,” the Players Championship had its usual throngs of fans in attendance as it started play Thursday in Ponte Vedra Beach, Fla. The PGA Tour had said fans would not be allowed on Friday and for the remainder of the tournament, before it decided to take further measures.

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There was no immediate word on whether the Players Championship — which saw Japan’s Hideki Matsuyama take the lead by two strokes with an opening-round 63 — would be rescheduled. The PGA Tour said it would take questions on Friday morning.

UFC proceeds with upcoming events, one without fans

UFC President Dana White said Thursday that his company would continue to stage its upcoming events, beginning with one Saturday in Brazil that won’t have fans in attendance. The following weekend, a UFC card in London will “proceed as planned,” as British authorities are currently placing no restrictions on sports events.

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That is far from the case in Ohio, and White said that an event that was slated to take place in Columbus on March 28 will be moved to an arena that the UFC owns in Las Vegas. He added that the UFC was working with the Nevada State Athletic Commission to “screen athletes” before letting them compete.

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Saying his company has always gone “overboard with health and safety,” White told ESPN, “I talked to the president and the vice president of the United States today about this, and they’re taking this very serious. They’re saying, ‘Be cautious, be careful, but live your life and stop panicking.’ Everybody is panicking, and instead of panicking, we’re actually getting out there and working with doctors and health officials and the government, to figure out how we keep the sport safe and how we can continue to put on events.”

XFL calls off rest of regular season

The XFL announced Thursday that it will not be playing the rest of its regular season slate. The league, which began play this year, said it was “committed to playing a full season in 2021 and future years.”

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The XFL also made sure to note that “all players will be paid their base pay and benefits for the 2020 regular season.” That could have been an attempt to not only allay players’ fears but also differentiate itself from the Alliance of American Football, another fledgling league that suffered a financial collapse last year in the midst of its first season, leaving players, coaches and others in the lurch.

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The XFL is halfway through its 10-week schedule. The league appeared to leave open the possibility that it might stage a postseason at some point.

Australian Grand Prix is canceled

After a member of McLaren Racing tested positive for coronavirus and the Formula 1 team withdrew from the Australian Grand Prix, the entire event was canceled on Thursday.

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The International Automobile Federation (FIA) announced it made that decision in conjunction with Formula 1 and with the “full support” of the Australian Grand Prix Corporation, after consulting with the nine other teams entered in the race.

“All parties took into consideration the huge efforts of the AGPC, Motorsport Australia, staff and volunteers to stage the opening round of the 2020 FIA Formula One World Championship in Melbourne,” FIA said, “however concluded that the safety of all members of the Formula 1 family and the wider community, as well as the fairness of the competition take priority.”

NWSL cancels preseason games

The National Women’s Soccer League is canceling its preseason slate after “receiving guidance from local and state authorities and medical personnel,” the organization announced Thursday. The NWSL regular season is set to begin April 18.

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“Our priority continues to be the safety and well-being of our players, coaches, staff, and fans,” NWSL Commissioner Lisa Baird said in a statement. “We are reviewing all contingency plans related to our regular season schedule and are monitoring developing events and their potential impact.”

CAA tournament referee tests positive

The Colonial Athletic Association announced Thursday that a game official who worked at its men’s basketball tournament last week has tested positive for coronavirus.

“The official did not exhibit symptoms of the virus until 72 hours after the game he worked,” the conference said, “but out of an abundance of caution the conference has made the involved institutions and tournament personnel aware of the situation so they can take proper precautionary measures.”

The tournament took place in Washington, D.C., at the Entertainment and Sports Arena. That facility is used for practice by the Washington Wizards, and for games by the Washington Mystics and the Capital City Go-Go.

NCAA cancels March Madness

After announcing Wednesday that its men’s and women’s basketball tournaments would be closed to the public, NCAA President Mark Emmert and the Board of Governors on Thursday announced in a statement they had canceled the events, as well as all remaining winter and spring NCAA championships.

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The men’s and women’s basketball tournaments, scheduled to begin next week, had been held every year since 1939 for men’s college teams and 1982 for women’s teams.

Read more here.

MLB suspends spring training, delays start of season

With Opening Day on March 26 exactly two weeks away, Major League Baseball on Thursday suspended spring training games and delayed the start of the regular season by at least two weeks.

“MLB and the Clubs have been preparing a variety of contingency plans regarding the regular season schedule,” the league said in a statement. “MLB will announce the effects on the schedule at an appropriate time and will remain flexible as events warrant, with the hopes of resuming normal operations as soon as possible.”

Minor League Baseball will also delay the start of its season.

Read more here.

NHL suspends season indefinitely

The NHL announced that it has suspended its season indefinitely after the league’s Board of Governors held a conference call early Thursday.

“Our goal is to resume play as soon as it is appropriate and prudent, so that we will be able to complete the season and award the Stanley Cup,” Commissioner Gary Bettman said in a statement. “Until then, we thank NHL fans for your patience and hope you stay healthy.”

Read more here.

ATP suspends tour, Miami events shut down

Miami-Dade County Mayor Carlos A. Gimenez announced Thursday that the county has suspended operation of the Miami Open men’s tennis tournament, which was scheduled to begin March 23, and halted events at American Airlines Arena, home of the Miami Heat. The tennis tournament later announced it won’t be played this year.

The ATP Tour already had called off this month’s BNP Paribas Open in California and on Thursday announced a six-week suspension of the men’s tennis tour.

“This is not a decision we have taken lightly, and it represents a great loss for our tournaments, players, and fans worldwide,” ATP Tour Chairman Andrea Gaudenzi said in a statement.

The NASCAR Dixie Vodka 400 on March 22 at Homestead-Miami Speedway also has been postponed, the mayor’s office announced, although it said NASCAR could decide to run the race without fans.

Three Leicester City players self-isolate

Leicester City Manager Brendan Rodgers said Thursday that three of his Premier League players have self-isolated after showing signs of coronavirus. The players were not identified, and their symptoms have not progressed to the point where they need to be tested for the virus.

“We had a few players that have shown symptoms and signs,” Rodgers said. “It would be a shame [if the Watford game were postponed], but the public’s health is the most important in all of this.”

Wizards to self-quarantine

The NBA’s Washington Wizards are advising their players to self-quarantine for the next three to four days, the team announced Thursday. The Wizards played Utah on Feb. 28, and Jazz center Rudy Gobert has tested positive for the coronavirus, leading the NBA to suspend its season.

The Wizards also faced the Knicks on March 10, six days after New York also played Utah, and the Knicks also have been advised to self-quarantine. Gobert played 33 minutes against the Wizards on Feb. 28.

Read more here.

Spanish soccer shut down

Spain’s top-flight professional soccer league announced Thursday that it is postponing its next two rounds of matches after players for Real Madrid were sent home to self-isolate. None of the club’s soccer players have tested positive for coronavirus, but they may have come in contact with a Real Madrid basketball player who did, as the two teams share a training complex that has been closed down for now.

NBA suspends season indefinitely

The NBA announced Wednesday that it had suspended the remainder of the 2019-20 season after Utah Jazz center Rudy Gobert tested positive for the coronavirus.

“A player on the Utah Jazz has preliminary tested positive for COVID-19,” the NBA’s statement read. “The test result was reportedly shortly before tip-of of [Wednesday’s] game. At that time, [Wednesday’s] game was canceled. The affected player was not in the arena. The NBA is suspending game play following the conclusion of [Wednesday’s] schedule until further notice. The NBA will use this hiatus to determine next steps for moving forward in regard to the coronavirus pandemic.”

USA Hockey cancels national championships

A series of national championship events set to kick off around the country on March 26 and involving high school, youth, girls, adult and sled teams have been canceled Wednesday by USA Hockey. The governing body for the sport in the U.S. also canceled its Disabled Hockey Festival, which scheduled to take place March 26-29 and April 2-5 in Pittsburgh.

“Safety of our participants has always been our top priority and with the current coronavirus situation, our executive committee unanimously decided to cancel these national events,” USA Hockey President Jim Smith said in a statement.

WAC postpones tournament game due to ‘a medical situation’

Citing “a medical situation,” the Western Athletic Conference announced Wednesday that it was postponing a conference tournament game set for that evening between CSU Bakersfield and Grand Canyon. The WAC said the game would be played Thursday morning.

Stadium reported that a source said a student-athlete at the WAC women’s basketball tournament “was sick and has gone to a hospital to be tested.” It was also told that the athlete “was never in the arena, but the decision was made to postpone and await further test results.”

Two NFL teams pull scouts off the road

The Philadelphia Eagles and Pittsburgh Steelers have told their scouts to stop traveling to top college players’ Pro Days, which usually take place at the players’ universities, according to a report Wednesday by Yahoo Sports. “We’ve adjusted our travel plans temporarily as it pertains to Pro Days,” the Steelers told the website.

Other NFL teams, including the Dallas Cowboys, have yet to alter their approaches to evaluating prospects ahead of the NFL draft in April.

Juventus player tests positive

A player for Italian soccer powerhouse Juventus has tested positive for covid-19, the team announced Wednesday. Defender Daniele Rugani is “currently asymptomatic,” the team said, adding that it is “currently activating all the isolation procedures required by law, including those who have had contact with him.”

Rugani, 25, did not play in Juventus’s 2-0 win Sunday over Inter Milan that was staged with no fans in attendance, but he did post a celebratory team photo afterward from the locker room. Superstar teammate Cristiano Ronaldo, who was among those pictured, reportedly went to Portugal on Monday to be with his mother following a stroke she suffered last week.

Ronaldo’s return to the team is uncertain, particularly as all domestic sports have been shut down in Italy until at least April 3. Juventus is scheduled to play a Champions League match against France’s Lyon in Turin on Tuesday. That would be another game played without fans, but Rugani’s condition could cause a reassessment of staging it at all.

Shiffrin loses shot at World Cup title

Mikaela Shiffrin lost out on a chance to defend her overall World Cup crown when the final events of the season, to be held in Are, Sweden, were called off. The American skiing star, who took a six-week break from competition following the death of her father, was looking to make up ground on Italy’s Federica Brignone in the points race.

Instead, Brignone becomes the first Italian overall winner in the 53-year history of the women’s World Cup. The World Cup Finals in Cortina d’Ampezzo, Italy, had already been canceled.

“My lifelong dream came true,” Brignone reportedly said. Shiffrin had won the past three World Cup overall titles.