Posted on January 3, 2020 by Dancehall GeneralMets Trivia Of The Day: January 3rd, 2020 Welcome back. We’ll travel back in time a bit for this one.. Question: Who was the first person to have their jersey number retired by the Mets? Answer: Casey Stengel. The Mets’ first ever manager had his “37” retired by the Mets after his retirement. Share this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window)Click to share on Google+ (Opens in new window)Like this:Like Loading... Related