In 2006, Greenberg hit .179 for the Diamond Jaxx and .118 for Iowa, and was released by the Chicago Cubs organization on June 2, 2006. Mike Downey of the Chicago Tribune, in an interview on 06/06/06, compared him to Moonlight Graham, who 100 years earlier had appeared in his only Major League game, only to not get an official at-bat, a story recounted in the film "Field of Dreams". Greenberg said in the interview, "If that was the extent of my time as a baseball player, just that one very strange little moment, well, there's nothing more I can do about it."