Filed under: Stream Arizona Diamondbacks Diamondbacks To Honor Luis Gonzalez, Retire No. 20 Contributors: Cory Williams Share this story Share this on Facebook Share this on Twitter Share All sharing options Share All sharing options for: Diamondbacks To Honor Luis Gonzalez, Retire No. 20 Reddit Pocket Flipboard Email Gonzo is the first Diamondback in history to have his number retired. The celebration will take place on August 7. 1 Total Update Since Jun 23, 2010, 8:51pm MST Follow this stream June 23, 2010 Diamondbacks To Honor Luis Gonzalez, Retire No. 20 By Cory Williams@cwilliams2k4 An honor is bestowed on Arizona's most famous former player.