For some perspective, the MLB record for most in a season is 6 - held by Don Mattingly (1987) &Travis Hafner (2006) and is now tied for the third most all time with 18 others.

Included in the aforementioned 18 are-

Lou Gehrig (whose 23 grand slams rank second all-time), Babe Ruth (who hit four slams in 1919 while also winning nine games in his last season as a regular pitcher), Ralph Kiner, Mike Piazza and Edgar Martinez.

Hitting one grand slam in a season is hard enough. But hitting a large handful of them? That takes an incredibly rare combination of both skill and a little luck. From 1901 -- the season the American League began play -- through 2017, a total of 146 different players had

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