The biggest slam in Mets home run history was not by Dave Kingman, Darryl Strawberry or Mike Piazza... it was by Tommy Agee. In April of 1969... on their way to the "Miracle Season", Tommy Agee slammed a home run that landed in the red upper deck of left field. A historical marker was placed there to commemorate the shot. You can see it right before the last section of the upper deck begins where the concourse intersects with the stairs.