There were relievers booed from time to time during the Wilderness Years.
glad I missed that.
I remember back in the dome a couple of Braves relievers got up and started to get ready along the third base line. Some guys started to heckle them, but someone with the Astros (don't remember who) told them to cut it out. One of the relievers had come up in the Astros system (hey, he used to be one of our guys). But I thought it was classy that he said something. Let Yankee fans, (and apparently Dodger fans) be classless idiots.
Some visiting players invite being heckled (like Beltran for stringing the Astros along in the 2004 off-season) but most (like Judge) don't.