The first day of the most exciting weekend in sports is here. Stick around to discuss your brackets and the inevitable upsets.
As always, all games are broadcast nationally on cable, and all games can be streamed here.
After the jump, the day's full schedule and media info, thanks to SBNation.
Murray State vs. Colorado State, 9:15 a.m. PST, CBS (Louisville)Announcers: Verne Lundquist (play-by-play), Bill Raftery (analyst), Lesley Visser (sideline)
Kansas State vs. Southern Miss, 9:40 a.m. PST, truTV (Pittsburgh)
Announcers: Kevin Harlan (play-by-play), Len Elmore and Reggie Miller (analysts), Marty Snider (sideline)
Louisville vs. Davidson, 10:40 a.m. PST, TBS (Portland)
Announcers: Brian Anderson (play-by-play), Dan Bonner (analyst), Jenn Hildreth (sideline)
Wisconsin vs. Montana, 11:10 a.m. PST, TNT (Albuquerque)
Announcers: Spero Dedes (play-by-play), Bob Wenzel (analyst), Jamie Maggio (sideline)
Marquette vs. BYU, 11:45 a.m. PST (tentative), CBS (Louisville)
Announcers: Verne Lundquist (play-by-play), Bill Raftery (analyst), Lesley Visser (sideline)
Syracuse vs. UNC Asheville, 12:20 p.m.PST (tentative), truTV (Pittsburgh)
Announcers: Kevin Harlan (play-by-play), Len Elmore and Reggie Miller (analysts), Marty Snider (sideline)
NCAA Tournament Regional Breakdowns: East | West | South | Midwest
New Mexico vs. Long Beach St., 3:20 p.m. CT (tentative), TBS (Portland)
Announcers: Brian Anderson (play-by-play), Dan Bonner (analyst), Jenn Hildreth (sideline)
Vanderbilt vs. Harvard, 1:40 p.m. PST (tentative), TNT (Albuquerque)
Announcers: Spero Dedes (play-by-play), Bob Wenzel (analyst), Jamie Maggio (sideline)
Kentucky vs. Western Kentucky, 3:50 p.m. PST, TBS (Louisville)
Announcers: Verne Lundquist (play-by-play), Bill Raftery (analyst), Lesley Visser (sideline)
Wichita State vs. VCU, 4:15 p.m. PST, CBS (Portland)
Announcers: Brian Anderson (play-by-play), Dan Bonner (analyst), Jenn Hildreth (sideline)
Gonzaga vs. West Virginia, 4:20 p.m. PST, TNT (Pittsburgh)
Announcers: Kevin Harlan (play-by-play), Len Elmore and Reggie Miller (analysts), Marty Snider (sideline)
Baylor vs. South Dakota State, 4:27 p.m. PST, truTV (Albuquerque)
Announcers: Spero Dedes (play-by-play), Bob Wenzel (analyst), Jamie Maggio (sideline)
Iowa State vs. Connecticut, 6:20 p.m. PST, TBS (Louisville)
Announcers: Verne Lundquist (play-by-play), Bill Raftery (analyst), Lesley Visser (sideline)
Indiana vs. New Mexico State, 6:20 p.m. PST (tentative), CBS (Portland)
Announcers: Brian Anderson (play-by-play), Dan Bonner (analyst), Jenn Hildreth (sideline)
Ohio State vs. Loyola Maryland, 6:50 p.m. PST (tentative), TNT (Pittsburgh)
Announcers: Kevin Harlan (play-by-play), Len Elmore and Reggie Miller (analysts), Marty Snider (sideline)
UNLV vs. Colorado, 6:57 p.m. PST (tentative), truTV (Albuquerque)
Announcers: Spero Dedes (play-by-play), Bob Wenzel (analyst), Jamie Maggio (sideline)