The Mets, down two runs in a 1965 game against the Cincinnati Reds, had loaded the bases when rookie Ron Swoboda came to the plate.
Swoboda hit a long fly that hit a wooden extension the Reds had erected on top of Crosley Field's cement outfield wall to block the glare from construction lights on a nearby highway. Balls that hit the wooden extension were supposed to be home runs, but the umpires called it a hit instead of a grand slam.
Yogi Berra, then the Mets' first base coach, screamed loud and long before he was.