Locker, who pitched for five different teams and was a member of the 1972 World Series champion Oakland Athletics, said his tribute site collects memorabilia about Miller in an attempt to raise awareness of his legacy’s importance to American labor unions, and to get Miller elected to the Baseball Hall of Fame. In December 2013, Miller’s candidacy failed to garner enough votes for 2014 induction as one of 12 names on the “Expansion Era” ballot—for those Hall of Fame candidates who are no longer eligible to be considered in the regular ballots cast by the Baseball Writers’ Association of America, but are instead evaluated by a special 16-member committee.

“[Former MLB pitcher] Jim Bouton and I decided to mount a campaign to get some logic into the minds of the people of baseball about what [Miller] meant to the game and all of sports,” said Locker. “That’s why I started the website. Many came to the site and praised him.”

Miller is considered the labor negotiator who changed the character of American professional sports. As executive director of the MLBPA, he presided over the suspension of the “reserve clause” that bound players to the team that held their contract, the introduction of salary arbitration in player-management disputes, and the birth of free agency, which allowed a player movement to seek the best offer for his services. Peter Seitz, the arbitrator who invalidated baseball’s reserve clause in 1975, wrote in a 1983 letter to the New York Times that Miller was “the Moses who had led baseball’s children of Israel out of the land of bondage.”

Brad Snyder—a University of Wisconsin law professor and author of “A Well-Paid Slave: Curt Flood’s Fight for Free Agency in Professional Sports,” a book that gives an in-depth look at the outfielder’s famed lawsuit that challenged the reserve clause—said Flood’s suit was a crucial event in the history of professional sports. It afforded Flood a historical status often compared to that of Jackie Robinson (who broke baseball’s color barrier), but it remains both underappreciated and misunderstood, Snyder told JNS.org.