What is a 'play-in' game or 'play-in' winner?

A play-in game of the NCAA Men's Division I Basketball Championship is a pre-tournament game, played between two teams vying for a spot in the 64 team tournament. Because our brackets only include the 64 team tournament, you don't need to pick the play-in game(s). Instead, you have the option of picking the 'play-in winner' for the first round of the tournament. Once the play-in winner has been decided, this will be replaced with the winning team name.