When Do Tournament Challenge Brackets Lock

The 68-team bracket is the standard version of the NCAA tournament field that has been in place since 2011. If the 2021 field is comprised of 68 teams, there will be some key differences to past. A Ready-Go tournament is a 50-player leaderboard tournament where the top 30 players receive prizes. As soon as 50 players enter the tournament, it will be closed for new entries and a new tournament will automatically become available to join. After joining a Ready-Go tournament, players will have 24 hours to post their score to the leaderboard.

By Joe LunardiUpdated: 3/9/2021 at 11:15 p.m. ET

When Do Tournament Challenge Brackets Lockers

The NCAA tournament we lost last season has been found -- and will be different than any previous such event.

The realities of the coronavirus pandemic mean the 2021 NCAA tournament will be held at a single destination – the state of Indiana – with multiple venues utilized and the usual tournament schedule adjusted. The Final Four is slated to be held at Lucas Oil Stadium on April 3 and 5, but uncertainty will continue to reign following a regular season characterized by numerous cancellations and postponements throughout college basketball.

When Do Tournament Challenge Brackets Locking

What is expected to remain familiar is the selection of a 68-team field, which is where Joe Lunardi comes in. Joey Brackets will continue to perform the bracket math and make projections on the field until Selection Sunday on March 14. For a deeper look at the NCAA tournament bubble, visit John Gasaway's Bubble Watch (ESPN+) . To fill out a Tournament Challenge bracket, visit ESPN Tournament Challenge . — ESPN college basketball staff