So to make it an ultimate grand slam, Baseball Almanac lists players on the home team who came to the plate and hit a grand slam when trailing by three runs in the bottom of the ninth inning thus winning the game.

From 1950 though 2020 there were more than one-hundred eighty instances of players hitting a walk off-grand slam!

Baseball Almanac is pleased to present a comprehensive chart of every player who has hit an ultimate grand slam, or a walk off super slam. Super? Ultimate? Well, if we only counted "simple" walk off grand slams the event would not be as rare as people think:

" Roger Connor was a complete player — a deft first baseman and an agile base runner who hit 233 triples and stole 244 bases despite his size (6 feet 3 inches and 200 pounds)." - New York Times (George Vecsey, 05/13/2007, "Going Deep, Before Bonds and Aaron and Ruth ")

There have been twenty-nine instances of a player hitting an ultimate grand slam by twenty-nine different ballplayers — not one player has ever done this twice.

Did you know that the players whose names are bold hit an ultimate grand slam, not only at home and down by three runs, but also when there were two outs?

Did you know that Del Crandall hit his ultimate grand slam in the ninth inning, down by three runs, with two outs, AND a full pitch count - the first recorded instance of this type of ultimate grand slam? Did you know that Babe Ruth, Jason Giambi, and Ryan Roberts hit their ultimate grand slam in the extra innings? Did you know that Roberto Clemente hit the ONLY inside-the-park ultimate walk off grand? The box score:

Roberto Clemente | The Montgomery Advertiser | July 26, 1956

Is an ultimate grand slam the most exciting feat? Have you ever seen an ultimate grand slam, or a "regular" walk off grand slam? Tell us on Baseball Fever.