Jim is joined by baseball Twitter personality Not Gaetti to break down the HOF candidacy of former New York Yankees first baseman Don Mattingly. First, they cover the lack of postseason success Mattingly experienced despite playing for the New York Yankees for 14 years (8:42). Next, they discuss his 8-game home run streak in 1987, just how dominant his peak seasons were, and where he ranks among the best first basemen of the 1980s (18:01). Finally, they decide who is the greatest New York Yankee not in Cooperstown today (44:30), before making a final call on whether Mattingly belongs in the Baseball Hall of Fame (48:49).