Doesn't affect a home run ball, but the foul territory at Dodger Stadium used to be SO much bigger. Lots of harmless fouls today might've ended at-bats before anybody could hit one out back in the day.
Daulton Varsho hit a home run before the Hillsboro Hops game in Salem-Keizer was paused for darkness due to the 2017 Total Eclipse... and then hit another after the game resumed.