NCAA Softball Tournament tickets went on sale at 10 a.m. Monday. By 10:08 a.m., the Norman Regional was sold out.
"Sooner fans are the best," OU softball wrote in a tweet.
A limited number of all-session general admission tickets were available for $20.
No. 1 seed Oklahoma will host Wisconsin, Notre Dame and Maryland-Baltimore County. The regional begins at 6 p.m. Friday.
The official capacity of Marita Hynes Field is 1,378, but a record 2,076 fans packed the stadium for Bedlam.
Plans for a new softball stadium that would double the current capacity were approved last June, but construction hasn't started.