The other day, I watched a Jon Bois video about how the Pittsburgh Pirates blew a 10-run lead that they built in the very first inning to the Philadelphia Phillies on June 8th, 1989. There were many Phillies heroes that day, and one of the most notable ones was Steve Jeltz. Jeltz hit two home runs that day and ended up with 5 RBIs—the difference between the Phillies winning 15-11 (which they did) and losing 11-10.
This was pretty stunning to everyone involved because, before the 1989 season, Jeltz had hit all of one homer in the previous six seasons combined.