These are the brackets for a 48 team play-in. There would be six games each day from Tuesday to Friday, with the winners advancing to the round of 64, where they would be seeded by their composite rank. The higher ranked team for the play-in round hosts the lower ranked team.

The composite rank (an average of five major ranking services) preceeds each team name. Where a conference champion has not yet been determined (because this system isn't in place yet) I used the highest seeded team remaining in the conference's tournament. Those schools are in blue. Conference champions already determined are in bold. All others are at large.

#2 Gonzaga vs #263 NC Central
#5 Dayton vs #210 Robert Morris
#6 San Diego State vs #219 Prairie View A&M
#14 BYU vs #153 Siena
#18 Houston vs #141 UA Little Rock
#37 Utah State vs #136 Winthrop
#36 St Mary's vs #111 UC Irvine
#39 Wichita State vs #128 North Dakota State
#44 Richmond vs #114 Hofstra
#44 Cincinnati vs #146 Northern Kentucky
#48 East Tennessee State vs #170 Boston University
#55 Memphis vs #121 Eastern Washington
#55 UConn vs #107 Bradley
#61 Northern Iowa vs #96 S.F. Austin
#64 Rhode Island vs #93 Belmont
#65 St Louis vs #92 San Francisco
#67 Yale vs #86 New Mexico State
#70 Vermont vs #87 Northern Colorado
#73 Davidson vs #91 SMU
#75 Liberty vs #92 North Texas
#75 VCU vs #86 UNC Greensboro
#77 Furman vs #83 Boise State
#78 Tulsa vs #83 Louisiana Tech
#79 Akron vs #86 Nevada

From the four strongest of the mid major conferences (A10, AAC, WCC and MWC) a total of 21 schools would be in the play-in round. If all the favorites were to win, those conferences would place 17 into the round of 64.