alt Hacker News"Back of the net" doesn't feel the same to me even though (I learn after reading far too much about a sport I do not play) "Out of the park" is basically the same thing.
In my mind "out of the park" had meant the ball leaves the actual stadium but in fact (I read) "the park" in this context is actually the field of play and so "out of the park" represents in fact the vast majority of home runs and not the over-achievement I had imagined.
So TIL but thanks for the suggestions.
True, "back of the net" is more "someone kicked the ball really hard and it hit the back of the net really hard" instead of "the ball came across the goal line" which can be very different, so in my mind that's as close to "out of the park" as you can get in soccer :)