http://www.ncaa.org/sport-science-institute/coronavirus-covid-19 has cancelled this year’s men’s and women’s basketball tournaments.
https://cares.nba.com/coronavirus/ has suspended the season indefinitely
https://www.nhl.com/news/nhl-coronavirus-status/c-316155530 has suspended the season indefinitely
https://www.mlssoccer.com/post/2020/03/12/major-league-soccer-suspends-season-30-days-impact-coronavirus season has been put on hold for 30 days
https://www.mlb.com/news/mlb-statement-coronavirus Opening Day delayed at least 2 weeks (Spring training has suspended play)
The PGA Tour will shut down for the next three weeks with no word on whether the Players Championship would be rescheduled.
The XFL has suspended the season and https://www.xfl.com/en-US/articles/xfl-statement, according to a statement on the league website.
https://www.masters.com/en_US/news/articles/2020-03-13/2020_masters_tournament_postponed.html is postponing the tournament, the Augusta National Woman’s Tournament and the Drive, Chip and Putt National Finals.
Formula 1, The FIA, and race organizers have postponed the Bahrain Grand Prix on March 20-22 and the Vietnam Grand Prix on April 3-5.
Little League Baseball is suspending operations and delaying the start of its season.
The 124th Boston Marathon has been postponed until Sept. 14.