How to Play 2024 NCAA March Madness Men's, Women's Bracket Challenge, Tournament Run

Selection Sunday is nearly upon us, which means it's almost time for college basketball fans to fill out their NCAA tournament brackets ahead of March Madness.

While making selections is the most difficult part of the March Madness Bracket Challenges given the potential for upsets, filling out the brackets themselves has been made simple—just follow the links below.

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Sign up to Play the NCAA March Madness Men's Bracket Challenge, Tournament Run, and Conference Tournament Pick Em.

Sign up to Play the NCAA March Madness Women's Bracket Challenge, Tournament Run, and Conference Tournament Pick Em.

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Filling out the perfect bracket is a dream for millions of college basketball fans, but the reality of actually accomplishing the feat is very slim.

According to Daniel Wilco of NCAA.com, there's a 1 in 120.2 billion chance of filling out the perfect bracket "if you know a little something about basketball." If you "just guess or flip a coin" that number inflates to a 1 in 9.2 quintillion chance of picking every winner right.

During last year's men's tournament, there were numerous upsets. For example, No. 15 Princeton downed No. 2 Arizona 59-55 in the first round and No. 16 Fairleigh Dickinson also shocked No. 1 Purdue 63-58 in the tournament's opening round.

In the latter rounds of the tournament, No. 5 Miami upset No. 1 Houston in the Sweet 16, and the Hurricanes went on to upset No. 2 Texas in the Elite Eight. No. 9 Florida Atlantic also upset No. 3 Kansas State in the Elite Eight.

This year's tournament promises to be just as exciting, and the likes of Purdue, UConn, Houston and Tennessee are among the top teams vying for a shot at the title.

On the women's side, South Carolina, Iowa, Stanford and USC are among the heavyweights prepared to make a deep run.

The Gamecocks will be looking to win their second title in three years under Dawn Staley, and the Hawkeyes will be hoping Caitlin Clark can lead the team to a championship before she makes the jump to the WNBA.

Kim Mulkey's LSU will also be a team to watch on the women's side after the program won the title last year. The Tigers boast a talented roster this year highlighted by Angel Reese, Hailey Van Lith and Flau'jae Johnson.