The sponsoring body of the Indiana Baseball Hall of Fame is the Indiana High School Baseball Coaches Association, IHSBCA, which has served the baseball coaches of Indiana since 1971. The first inductions were in July 1979, and as of 2015 there are currently 184 inductees in the hall of fame in four categories: pro-player, coach-manager (high school, college, pro), contributor and veteran. The veteran is selected by a committee of retired or long-time coaches. All other inductees must receive 65% of total votes cast by IHSBA member coaches.
Whether any member of this group makes it through is unknown. Miller deserves induction for his groundbreaking work as the executive director of the players' union in the 1960s and 70s, when he turned the MLBPA into arguably the strongest professional sports union in the country, and for his challenge to the reserve clause, which helped create free agency for players. He also came up just one vote shy of the Hall in a previous Era Committee ballot in 2011. Trammell is a strong candidate by the advanced stats and was gaining some traction in his final years on the BBWAA ballot but never cracked 40% of the vote. John and Tiant are borderline cases by the numbers, and Morris still has plenty of supporters among the old guard.