This year's tournament will be held entirely in Indiana because of the pandemic. There are some slight changes to how the bracket will be seeded. The top four seeds will be handled the same and so will the First Four. The changes will come in how the rest of the bracket is completed. Teams will be placed in the bracket based on rankings without the usual considerations for geography. This is called using the "S-curve" to fill the bracket. There will be 37 at-large selections (one more than normal) and 31 automatic qualifiers (one fewer than normal).