How's the biggest sports dad on the planet coexisting with the biggest athlete in the universe??
Quietly ... 'cause LaVar Ball tells TMZ Sports he and LeBron James stay outta each other's way in Los Angeles -- and things have gone along just fine.
"I really don't have a relationship with LeBron," the big Baller says.
"I like it. He ain't done nothing bad to me, I ain't done nothing bad to him. So, as long as we good, we'll be all right."
Of course, that's music to Luke Walton's ears .