Here's a quick primer on what you need to know heading into the big reveal:
Who's on the ballot?
The 2016 ballot is packed with intriguing first-timers, veteran holdovers who have been inching closer for years, and stalwarts who have one more shot at glory. The list of 32 names is highlighted by one legendary player who is making his first appearance on the ballot after retiring in '10, and that is slugger Ken Griffey Jr.
Closer Trevor Hoffman makes his first appearance on the ballot, along with a host of solid Major Leaguers including Billy Wagner, Jim Edmonds, Mike Lowell and Troy Glaus.