The NCAA postponed the two games scheduled at the Women's College World Series on Friday night because of severe weather in Oklahoma City, site of the eight-team tournament.
The storm also caused a water main break that flooded a hockey arena and led to the postponement of an AHL playoff game between the Oklahoma City Barons and the Grand Rapids Griffins.
Plans to make up the games were not immediately announced.
A storm dropped a tornado in Oklahoma City's western suburbs, then the storm moved toward the city.
Tennessee had been scheduled to play Washington in the World Series, with top-seeded Oklahoma facing rival Texas on Friday night in winner's bracket games.
The teams involved in the Women's College World Series were staying away from Hall of Fame Stadium and sought shelter in a downtown parking garage near their hotels.
Washington team spokeswoman Alyssa Olveda told NCAA officials that six of the eight teams gathered in the same hotel tunnel and parking garage downtown to ride out the storm.
Representatives from Tennessee, Oklahoma and Texas also said they left their downtown hotels to seek shelter at the Cox Convention Center, which has an underground parking garage that connects through tunnels to downtown Oklahoma City.
Hockey fans were moved from the arena to safety in an underground parking garage before the storms hit the area.