The COVID-19 outbreak canceled numerous sporting events across the United States and the world. Reported cases in the U.S. began to rise, and professional sports leagues followed suit.

The National Basketball Association (NBA) was one of the first leagues to suspend play after Utah Jazz center Rudy Gobert tested positive for COVID-19. His teammate, Donovan Mitchell, also tested positive the next day.

After Gobert tested positive, the NBA canceled all games, suspending the season for at least 30 days. The college basketball world followed shortly after.

The National Collegiate Athletics Association (NCAA) canceled all spring sports, including canceling the annual March Madness tournaments on both the men’s and women’s sides.

“Today, NCAA President Mark Emmert and the Board of Governors canceled the Division I men’s and women’s 2020 basketball tournaments, as well as all remaining winter and spring NCAA championships,” The NCAA said in a statement. “This decision is based on the evolving COVID-19 public health threat, our ability to ensure the events do not contribute to spread of the pandemic, and the impracticality of hosting such events at any time during this academic year given ongoing decisions by other entities.”

The National Hockey League (NHL) also suspended its season. The league decided it wasn’t right to hold events in stadiums that NBA teams also use after Gobert’s diagnosis.

Leagues that hadn’t started yet delayed their seasons, including Major League Baseball (MLB), Golf tournaments and Major League Soccer.

For the MLB, spring training was canceled. The Professional Golf Association (PGA) Tour postponed the Masters as well, one of professional golf’s most famous tournaments.

The Masters was supposed to start Thursday, April 9, but almost every sporting event which was supposed to take place in the next 30 days was postponed or canceled.

While professional players are mostly still being paid — there have been threats of losing pay but nothing has come to fruition — collegiate athletes are lobbying for another year of eligibility. The NCAA was rumored to consider adding another year of eligibility for spring athletes.

There is no known timetable for when any professional or collegiate sports will return. The suspension being removed depends on how the outbreak is handled in the U.S.

NBA commissioner Adam Silver believes that the NBA will be able to finish their season, according to CBS Sports.

“Even if we’re out for a month, if we’re out for six weeks, we can still restart the season,” Silver said. “It might mean the Finals take place in July or late July. Just my feeling was it was way premature to suggest we had lost the season.”

Despite optimism of finishing the season, NBA owners expect there to be a near three-month hiatus from pro basketball, according to ESPN.

For the NCAA, March Madness and the conference tournaments are canceled — not postponed — so college basketball fans will be without the annual tournaments in 2020.

As the COVID-19 outbreak continues to grow in the U.S., the sports world is hit hard with more events being canceled every week. The nature of sports requires many people in close contact, so with COVID-19 fears, the sports world remains shut down until the outlook improves.