Set By: Fernando Tatis
Joe Buck rumors aside, Fernando Tatis did not do much of anything in his brief three-year stint as a St. Louis Cardinal. However, he defied pretty much all odds one night in April of 1999 when he managed to not just hit two home runs in an inning (which has only been done 57 times in MLB history), but had both of those be grand slams. For this record to be broken, someone would not just have to hit three homers in an inning (which has never happened), but would also have to have the good fortune of the bases being loaded all three times. We love to say nothing is impossible, but that is pretty much impossible.